Question

How many plants spaced every 6 in. are needed to surround a circular walkway within a 25 ft. radius?

Answer 1

Consider the following formula to find the circumference of circle
C= 2^_r
here r is radius of circle
the radius of circular is 25 ft.
Therefore circumference is as follows
C = 2^_r

= 2 × 3.14 (25)
= 157.
circumference of circle feet is 157 × 12 inches.