The area of a circle is calculated using the formula A = πr^2, where r is the radius of the circle and π is a constant approximately equal to 3.14.
Given that the radius of the circle is 98mm, we can substitute this value into the formula:
A = 3.14 * (98)^2
A = 3.14 * 9604
A = 30154.56 mm^2
Rounded to the hundreds place, the area of the circle is equal to 30,154.56 mm^2.
The radius of a circle is 98mm. What is the area of the circle right your answer to the hundreds place use 3.14 for pi
5 answers
If the area of a circle is 28.26 cm² what is the radius of the circle?
The area of a circle is given by the formula A = πr^2, where A is the area, r is the radius, and π is approximately 3.14.
Given that the area of the circle is 28.26 cm², we can set up the equation as follows:
28.26 = 3.14 * r^2
To solve for the radius (r), we first divide both sides by 3.14:
r^2 = 28.26 / 3.14
r^2 = 9
Taking the square root of both sides to solve for r, we get:
r = √9
r = 3
Therefore, the radius of the circle is 3 cm.
Given that the area of the circle is 28.26 cm², we can set up the equation as follows:
28.26 = 3.14 * r^2
To solve for the radius (r), we first divide both sides by 3.14:
r^2 = 28.26 / 3.14
r^2 = 9
Taking the square root of both sides to solve for r, we get:
r = √9
r = 3
Therefore, the radius of the circle is 3 cm.
Complete the table by finding the circumference and area of a circle with a radius of 279 inches substitute 3.14 for pi express your answers to the hundredths place
Given that the radius of the circle is 279 inches, we can use the formulas for circumference and area:
Circumference = 2πr
Area = πr^2
Substitute π = 3.14 and r = 279 into the formulas to find the circumference and area:
Circumference = 2 * 3.14 * 279
Circumference = 1750.44 inches
Area = 3.14 * 279^2
Area = 3.14 * 77841
Area = 244391.94 square inches
Therefore, for a circle with a radius of 279 inches, the circumference is 1750.44 inches and the area is 244391.94 square inches, rounded to the hundredths place.
Circumference = 2πr
Area = πr^2
Substitute π = 3.14 and r = 279 into the formulas to find the circumference and area:
Circumference = 2 * 3.14 * 279
Circumference = 1750.44 inches
Area = 3.14 * 279^2
Area = 3.14 * 77841
Area = 244391.94 square inches
Therefore, for a circle with a radius of 279 inches, the circumference is 1750.44 inches and the area is 244391.94 square inches, rounded to the hundredths place.