Question

Hello I'm doing some practice work and would like some help thank you

Answer 1

Answer: 70 bags

First, we will find the area of the path. Let us first get the area of the outer circle, then subtract the area of the inner circle:

`A_(20)=\pi r^2=\pi(20)^2=1256.64`
`A_(17)=\pi r^2=\pi(17)^2=907.92`
`A=1256.64-907.92=348.72`

Then, we will find out how many bags of sand can cover the path if one path covers 5yd²

Let us round off the area to 350 yd², then divide it by 5 to find how many bags of sand do we need:

`(350)/(5)=70`

Therefore, we need 70 bags of sand to cover the path.