The fountain at the park has a walkway around it that is 1 foot wide. The fountain has a radius of 8 feet. The radius of the fountain and walkway together is 9
The area in terms of pi of the fountain and the walkway together is 81π ft2.
The approximate value for the area of just the walkway to the nearest whole number is 53

I need an explanation on how the walkway is 53
and no links

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

If chord ab is congruent to chord cd, then what must be true about ef and eg?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.