Question

Use 3.14 for pi. Find the circumference of a circle whose raduis is 17 inches squared. (round to the nearest tenth)
a. C = 106.5 inches squared
B. C = 106.7 inches squared
C. C = 106.8 inches squared
D. C = 106.9 inches squared
2. Find the area of a circle whose diameter is 6ft squared.
A. A = 113.04 Sq. Ft
B. A = 37.68 Sq. Ft
C. A = 18.84 Sq. Ft
D. A = 28.26 Sq. Ft
3. Ray is putting a piece of material around the circular top of his drum. The raduis of the top is 17.5 centimeters. Which is the closest to the circumference, in centimeters, of the top of the drum?

A. 54.95

B. 109.9
C.219.8
D. 961.63

Answer 1

1) The circumference is found via

Circumference = 2 times pi times Radius

2) Area is found via

Area = pi times radius^2

3) same as 1...use the circumference formula

Answer 2

Thanks so much!!!!