Question

Find the volume of a cylinder that has a diameter of 12 km and a height of 1 km. Volume =

km³
(Use 3. 14 for pi and round your answer to the nearest tenth. )

Answer 1

Hello !

Answer:

`\Large \boxed{\sf V\approx 113.0\ km^3}`

Explanation:

The volume of a cylinder is given by
`\sf V=\pi* r^2* h` where r is the radius and h is the heigth.

Given :

• d = 12km

• r = d/2 = 6km
• h = 1km

Let's replace r and h with their values in the prevous formula :

`\sf V=\pi*6^2*1\\V\approx 3.14* 36\\\boxed{\sf V\approx 113.0\ km^3}`

Have a nice day ;)

Answer 2

`\sf 113 \ km^3`

Explanation:

Volume of cylinder:

Find radius from the diameter.

r = 12 ÷ 2

r = 6 km

h = 1 km

Substitute r and h in the below formula,

`\boxed{\text{\bf Volume of cylinder = $\bf \pi r^2h$}}`

`\sf = 3.14*6*6*1\\\\= 113.04 \\\\ =113 \ km^3`