Question

The diameter of a circular garden is 16 feet. What is the approximate area of the garden?

A.
50 square feet

B.
100 square feet

C.
201 square feet

D.
803 square feet

Answer 1

$A = \pi r^2$

radius = half the diameter  ------> 16/2 = 8

$A = \pi (8^2) = 64 \pi$

pi = 3.14

64*3.14 = 201

Answer 2

Well I believe that the equation for the area of a circle is $\pi r^{2}$. Pi*Radius^2 
The radius of the garden is 8ft because it's half of the diameter. 8^2 is 64. Multiply that by 3.14 and you will get approximately 201 square feet so the answer is:

C) 201 square feet