Question

Help quick!!!!!!!!!!!!!!!!!!!

Answer 1

56.556

Explanation:

In order to find the areaof a cirlcle the equation is pi(r^2)

radius is half of a diameter so i did 18 divided by 2 =6

3.142(6^2)=113.112

but since its only half a cirle i divided my answer by 2 in order to get 56.556

Answer 2

Explanation:

Area of this pi r²/2

3.142*324/2=3.142*162=509,004