Question 4 on apply page.3

Question 4, page 3:

 

Formulas:  Area(square)  =  side²          Area(circle)  =  pi · radius²

 

[On circles, remember to use the radius, not the diameter.]

 

a)  Answer  =  Area(square) - Area(circle)  =  (8)² - pi·(4)²

 

b)  Answer  =  Area(outside circle) - Area(inside circle)  =  pi·(11)² - pi·(9)²

 

c)  Answer  =  Area(outside circle) - Area(inside circle)  =  pi·(4)² - pi(2.5)²