Question

A designer wants to make a circular fountain inside a square of grass as shown below. What is a rule for the area A of grass as a function of r?

Answer 1

so because you know that area of a square is side time side in case of this exercise will be A=2r*2r=4r^2

and you know it sure that area of a circle is pir^2
- so because this circle is inside this square us 4r^2 - pir^2
hope this will help you

Answer 2

ok ?

Answer 3

Ok, so then the first answer is correct?

Answer 4

no - i think the last one is like 4r^2 -pi*r^2

yes ?

Answer 5

Oh, ok. Thanks!

Answer 6

was my pleasure