First, we need to find the radius of the tree trunk. Since the diameter is 30 inches, the radius will be half of that, which is 15 inches (30 inches / 2 = 15 inches).
Next, we can calculate the surface area of the cylinder using the formula:
Surface Area = 2 * π * radius * (radius + height)
Since the length of the cylinder is given in feet, we need to convert it to inches. 15 feet = 180 inches.
Now we can plug in the values:
Surface Area = 2 * 3.14 * 15 * (15 + 180)
Surface Area = 2 * 3.14 * 15 * 195
Surface Area = 18810 square inches
Therefore, the correct answer is none of the options provided.
Sonia cut a tree trunk in the shape of a cylinder. The length is 15 feet and the diameter is 30 inches solve the surface area using 3.14 for pi.
A. 127.56
B. 2,826
C. 274.75
D. 117.75
3 answers
wrong
I apologize for the mistake in my previous calculation. Let's correct it:
Given:
Length = 15 feet = 15 * 12 = 180 inches
Diameter = 30 inches
Radius = 30 / 2 = 15 inches
Surface Area of a cylinder:
Surface Area = 2 * π * radius * (radius + height)
Surface Area = 2 * 3.14 * 15 * (15 + 180)
Surface Area = 2 * 3.14 * 15 * 195
Surface Area = 18810 square inches
Therefore, the correct answer is not among the options provided.
Given:
Length = 15 feet = 15 * 12 = 180 inches
Diameter = 30 inches
Radius = 30 / 2 = 15 inches
Surface Area of a cylinder:
Surface Area = 2 * π * radius * (radius + height)
Surface Area = 2 * 3.14 * 15 * (15 + 180)
Surface Area = 2 * 3.14 * 15 * 195
Surface Area = 18810 square inches
Therefore, the correct answer is not among the options provided.
1 answer