Lori wants to put a tarp over their family's circular pool to keep the leaves out. The pool has a diameter of 20 feet. How many square feet of blanket does she need? Use 3.14 for \piπ.

314 sq.feet

Step-by-step explanation:

r= 10 feet

as you know r= d/2

As pool is circular

Area of circle = πr^2

Area of circle= 3.14*10^2 = 314square feet

1/800 is the right answer

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076