Answer:
The radius for A = 1.91
The radius for B = 0.95
Explanation:
We are asked to find the circumference
Formula for circumference is
C = 2πr
C - the circumference of a circle
π - pie 22/7
r - radius of a circle
To get r, divide both sides by 2π
C/2π = 2πr/2π
r = C/ 2π
A. 12pie
Circumference = 12
r = 12/ 2 * 22/7
r = 12/ 44/7
r = 12 ➗ 44/7
Hint: changing a division to multiplication, we use the reciprocal of the value
r = 12 * 7/44
r = 84/44
r = 21/11
r = 1.91
B. 6m
Circumference = 6m
r = C/2π
r = 6/ 2 * 22/7
r = 6/ 44/7
r = 6 * 7/44
r = 42/44
r = 0.95