Find the area of the circle with the given radius or diameter. Use pi = 3.14. d = 10 A =

a. 314 sq. units

b. 157 sq. units

c. 78.5 sq. units

The formula in computing the area of the circle is:

A = pi (r) ^2

Where r = the radius of the circle

Since you are only given the diameter of the circle, you have to solve for its radius. The radius of the circle is half its diameter. Therefore, the radius of the circle is 5 (10/2).

Now, you substitute the measurements to the formula:

A = 3.14 (5) ^2

A = 3.14 (25)

A = 78.5 sq. units