Question

Given that


`v = \pi {r}^(2) h`
Make h the subject of the formula. Evaluate h when

`\pi = 22 / 7`

`r = 7`

`v = 616`


​

Answer 1

h = 4

Explanation:

v = πr²h

To make h the subject divide both sides by πr²

So we have

`h = \frac{v}{\pi {r}^(2) }`

when

π = 22/7

r = 7

v = 616

We have h as

`h = \frac{616}{ (22)/(7) * {7}^(2) } = (616)/( (22)/(7) * 49)`

`h = (616)/(22 * 7) = (616)/(154)`

h = 4

Hope this helps you