Question

HELP PLEASEEE!!!!! SCHOOL START TOMORROW. NUMBER 21 and 22 ONLY

Answer 1

21.
`\sqrt{(-s)/(15) }`

22. 87.92

Explanation:

21. The quotient means division is going to happen between -s and 15. And then take the square root of that.

`\sqrt{(-s)/(15) }`

22. The equation for the volume of a cylinder is this:

`\pi r^(2) h`

The question gives you values for r, and h, so just substitute those values into the equation.

Here is the work:

`\pi r^(2) h\\\\=\pi 2^(2) (7)\\\\=\pi(4)(7)\\\\=\pi (28)`

They told us to use 3.14 for pi, so i will substitute pi with 3.14

`\pi (28)\\\\=3.14(28)\\\\=87.92`