Question
Find the surface area
14 cm, 10 cm, 9 cm
14 cm, 10 cm, 9 cm
Answers
Answer
Find the surface area
9.5 cm, all sides are the same length
9.5 cm, all sides are the same length
Answer
The figure is a pyramid. The length of one triangle is 5 in. The height of it is 4.33. If all the triangles are equilateral, how much wrapping paper did he use in square inches?
Answer
This is wrong
Answer
The figure is a triangular pyramid. The length of one triangle is 5 in. The height of it is 4.33. If all the triangles are equilateral, how much wrapping paper did he use in square inches?
Answer
Find the surface area of a square pyramid with the side length of 1km and slant height 2km
Answered by
GPT 3.5
To find the surface area of a rectangular prism, you can use the formula:
Surface Area = 2(lw + lh + wh)
Where:
l = length
w = width
h = height
Given the dimensions of the rectangular prism as 14 cm, 10 cm, and 9 cm, we can plug these values into the formula:
Surface Area = 2(14*10 + 14*9 + 10*9)
Surface Area = 2(140 + 126 + 90)
Surface Area = 2(356)
Surface Area = 712
Therefore, the surface area of the rectangular prism is 712 square cm.
Surface Area = 2(lw + lh + wh)
Where:
l = length
w = width
h = height
Given the dimensions of the rectangular prism as 14 cm, 10 cm, and 9 cm, we can plug these values into the formula:
Surface Area = 2(14*10 + 14*9 + 10*9)
Surface Area = 2(140 + 126 + 90)
Surface Area = 2(356)
Surface Area = 712
Therefore, the surface area of the rectangular prism is 712 square cm.
Answered by
GPT 3.5
To find the surface area of a cube (where all sides are the same length), you can use the formula:
Surface Area = 6s^2
Where:
s = length of one side
Given the length of one side as 9.5 cm, we can plug this value into the formula:
Surface Area = 6 * (9.5)^2
Surface Area = 6 * 90.25
Surface Area = 541.5
Therefore, the surface area of the cube with a side length of 9.5 cm is 541.5 square cm.
Surface Area = 6s^2
Where:
s = length of one side
Given the length of one side as 9.5 cm, we can plug this value into the formula:
Surface Area = 6 * (9.5)^2
Surface Area = 6 * 90.25
Surface Area = 541.5
Therefore, the surface area of the cube with a side length of 9.5 cm is 541.5 square cm.
Answered by
GPT 3.5
To find the surface area of a square pyramid with equilateral triangles as its sides, you can use the formula:
Surface Area = (1/2) * Perimeter of the base * Slant height + Base area
First, we need to calculate the perimeter of the base (equilateral triangle). The formula to find the perimeter of an equilateral triangle is:
Perimeter = 3 * side length
Given that the side length is 5 inches:
Perimeter = 3 * 5
Perimeter = 15 inches
Next, we calculate the slant height of the pyramid. The slant height can be found using the Pythagorean theorem with the height and half the side length of the base as the other two sides of a right triangle.
Slant height = square root of (height^2 + (side length / 2)^2)
Slant height = square root of (4.33^2 + (5/2)^2)
Slant height = square root of (18.7489 + 6.25)
Slant height = square root of 25.9989
Slant height ≈ 5.1 inches
Now, we can calculate the surface area using the formula:
Surface Area = (1/2) * 15 * 5.1 + (5 * 5)
Surface Area = 38.25 + 25
Surface Area = 63.25 square inches
Therefore, the wrapping paper used for the pyramid is approximately 63.25 square inches.
Surface Area = (1/2) * Perimeter of the base * Slant height + Base area
First, we need to calculate the perimeter of the base (equilateral triangle). The formula to find the perimeter of an equilateral triangle is:
Perimeter = 3 * side length
Given that the side length is 5 inches:
Perimeter = 3 * 5
Perimeter = 15 inches
Next, we calculate the slant height of the pyramid. The slant height can be found using the Pythagorean theorem with the height and half the side length of the base as the other two sides of a right triangle.
Slant height = square root of (height^2 + (side length / 2)^2)
Slant height = square root of (4.33^2 + (5/2)^2)
Slant height = square root of (18.7489 + 6.25)
Slant height = square root of 25.9989
Slant height ≈ 5.1 inches
Now, we can calculate the surface area using the formula:
Surface Area = (1/2) * 15 * 5.1 + (5 * 5)
Surface Area = 38.25 + 25
Surface Area = 63.25 square inches
Therefore, the wrapping paper used for the pyramid is approximately 63.25 square inches.
Answered by
GPT 3.5
I apologize for the mistake in my previous calculation. Let me correct it.
In a square pyramid with equilateral triangles as its sides, the lateral surface area (wrapping paper needed) is calculated as follows:
Lateral Surface Area = (1/2) * Perimeter of the base * Slant height
First, let's calculate the perimeter of the base (equilateral triangle):
Perimeter = 3 * side length
Perimeter = 3 * 5
Perimeter = 15 inches
Next, let's calculate the slant height of the pyramid using the Pythagorean theorem:
Slant height = √(height^2 + (side length/2)^2)
Slant height = √(4.33^2 + (5/2)^2)
Slant height = √(18.7489 + 6.25)
Slant height = √24.9989
Slant height ≈ 5 inches
Now, we can calculate the lateral surface area:
Lateral Surface Area = (1/2) * 15 * 5
Lateral Surface Area = 37.5 square inches
Therefore, the wrapping paper needed for the pyramid is approximately 37.5 square inches. Thank you for pointing out the error.
In a square pyramid with equilateral triangles as its sides, the lateral surface area (wrapping paper needed) is calculated as follows:
Lateral Surface Area = (1/2) * Perimeter of the base * Slant height
First, let's calculate the perimeter of the base (equilateral triangle):
Perimeter = 3 * side length
Perimeter = 3 * 5
Perimeter = 15 inches
Next, let's calculate the slant height of the pyramid using the Pythagorean theorem:
Slant height = √(height^2 + (side length/2)^2)
Slant height = √(4.33^2 + (5/2)^2)
Slant height = √(18.7489 + 6.25)
Slant height = √24.9989
Slant height ≈ 5 inches
Now, we can calculate the lateral surface area:
Lateral Surface Area = (1/2) * 15 * 5
Lateral Surface Area = 37.5 square inches
Therefore, the wrapping paper needed for the pyramid is approximately 37.5 square inches. Thank you for pointing out the error.
Answered by
GPT 3.5
To find the surface area of a triangular pyramid with equilateral triangles as its sides, you can use the formula:
Surface Area = 1/2 * Perimeter of base * Slant height + Base area
Given that the length of one side of the equilateral triangle is 5 inches and the height is 4.33 inches, we can first calculate the perimeter of the base (equilateral triangle) using the formula:
Perimeter = 3 * side length
Perimeter = 3 * 5
Perimeter = 15 inches
Next, we calculate the slant height of the pyramid. The slant height can be found using the Pythagorean theorem with the height and half the side length of the base as the other two sides of a right triangle. The height of the triangle is 4.33 inches and half the side length is 2.5 inches.
Slant height = √(height^2 + (side length / 2)^2)
Slant height = √(4.33^2 + 2.5^2)
Slant height = √(18.7489 + 6.25)
Slant height = √24.9989
Slant height ≈ 5 inches
Now, we can calculate the surface area using the formula:
Surface Area = 1/2 * 15 * 5 + (5 * 5)
Surface Area = 37.5 + 25
Surface Area = 62.5 square inches
Therefore, the amount of wrapping paper needed for the triangular pyramid with equilateral triangles as its sides is approximately 62.5 square inches.
Surface Area = 1/2 * Perimeter of base * Slant height + Base area
Given that the length of one side of the equilateral triangle is 5 inches and the height is 4.33 inches, we can first calculate the perimeter of the base (equilateral triangle) using the formula:
Perimeter = 3 * side length
Perimeter = 3 * 5
Perimeter = 15 inches
Next, we calculate the slant height of the pyramid. The slant height can be found using the Pythagorean theorem with the height and half the side length of the base as the other two sides of a right triangle. The height of the triangle is 4.33 inches and half the side length is 2.5 inches.
Slant height = √(height^2 + (side length / 2)^2)
Slant height = √(4.33^2 + 2.5^2)
Slant height = √(18.7489 + 6.25)
Slant height = √24.9989
Slant height ≈ 5 inches
Now, we can calculate the surface area using the formula:
Surface Area = 1/2 * 15 * 5 + (5 * 5)
Surface Area = 37.5 + 25
Surface Area = 62.5 square inches
Therefore, the amount of wrapping paper needed for the triangular pyramid with equilateral triangles as its sides is approximately 62.5 square inches.
Answered by
GPT 3.5
To find the surface area of a square pyramid, you can use the formula:
Surface Area = Base area + (1/2) * Perimeter of the base * Slant height
Given that the side length of the square base is 1 km and the slant height is 2 km, we can first calculate the base area and the perimeter of the base:
Base Area = side length^2
Base Area = 1 km * 1 km
Base Area = 1 km^2
Perimeter of the Base = 4 * side length
Perimeter of the Base = 4 * 1 km
Perimeter of the Base = 4 km
Now, we can calculate the surface area of the square pyramid using the formula:
Surface Area = 1 km^2 + (1/2) * 4 km * 2 km
Surface Area = 1 km^2 + 4 km^2
Surface Area = 5 km^2
Therefore, the surface area of the square pyramid with a side length of 1 km and a slant height of 2 km is 5 square kilometers.
Surface Area = Base area + (1/2) * Perimeter of the base * Slant height
Given that the side length of the square base is 1 km and the slant height is 2 km, we can first calculate the base area and the perimeter of the base:
Base Area = side length^2
Base Area = 1 km * 1 km
Base Area = 1 km^2
Perimeter of the Base = 4 * side length
Perimeter of the Base = 4 * 1 km
Perimeter of the Base = 4 km
Now, we can calculate the surface area of the square pyramid using the formula:
Surface Area = 1 km^2 + (1/2) * 4 km * 2 km
Surface Area = 1 km^2 + 4 km^2
Surface Area = 5 km^2
Therefore, the surface area of the square pyramid with a side length of 1 km and a slant height of 2 km is 5 square kilometers.
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