If a circle has a diameter of 16 feet, which expression gives its area in square feet?
A. 82. a
B. 16. 1
C. 8.
D. 162 . x

π x (8)^2

Explanation:

Hi options are unclear, but to answer this question we have to apply the next formula

Area of a circle: π x radius^2

Since diameter = 2 radius

16=2r

16/2=r

8 = radius

Replacing with the values given:

A = π x (16/2)^2

A = π x (8)^2

A = π x 64

So, the expressions that gives the area of the circle could be π x (8)^2, or  

π x 64.

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