math help please!

Question

Find the area of the circles. Use 3.14 for . Show ALL WORK!

Answer 1

Area of circle = PI * radius^2

In problem 1 the radius is 12 in.

In problem 2 the radius is 14 km.

In problem 3 the diameter is 13 km. Radius is 1/2 the diameter = 6.5 km

For these 3 problems plug radius into area equation to get area.

In problem 4, we are given area, so we can find radius:

254.34 = PI*radius^2

Diameter will be twice the radius.