A circular play area has a diameter of 12 yards A fence is p

A circular play area has a diameter of 12 yards. A fence is put around the play area, with a 2-yard section of the circle left open for the entrance. Which of the following is closest to the minimum number yards of fencing needed?

A. 32

B.36

C. 38

D. 69

E. 73

Solution

Diameter= 12 yard

Perimeter = 2.pi.r = pi.D = 3.14×12=37.68

Section of the perimeter left for entrance =2 yard

Minimum number of yard required for fencing =37.68- 2= 35.68

Approximately =36.Answer is B.