Question

Please help me with this homework show me how you get it and the answer

Answer 1

753.6

Explanation:

use (pi)(r^2)h

(3.14)(4^2)(15)

r = 4 because it is half of diameter (8)

(3.14)(16)(15)

use calculator

753.6

Answer 2

753.6

Explanation:

Volume of a cylinder =
`V=\pi r^2h`

where r = radius and h = height

we are given the height ( 15 cm ) and the diameter ( 8 cm )

In order to calculate the volume we need the radius

We can easily convert diameter to radius by dividing by 2 ( this is because the radius equals half the length of the diameter )

so radius = 8 / 2 which equals 4

Now we plug in the values of "h" and "r" into the formula ( note we must use 3.14 for pi. Not doing so could give us the wrong answer )

`V=3.1.4(4)^215\\4^2=16\\16*3.14=50.24\\50.24*15=753.6\\V=753.6cm^2`

So we can conclude that the volume of the cylinder is 753.6cm²