Question

Julius dad bought a traffic cone to place at the end of their driveway. He hopes it will notify drivers to be cautious since children play in the area. He wants to fill the cone with cement so it won't fall over. Approximately how much cement will he need to fill traffic cone?

Answer 1

Option (3). 1571 in³

Explanation:

Amount of cement required to fill the cement = Volume of the cone

Formula for the volume of the cone is

Volume =
`(1)/(3)\pi r^(2)h`

Here r = radius of the cone

h = height of the cone

Volume =
`(1)/(3)\pi (10^(2))(15)`

=
`(1)/(3)\pi (100)(15)`

=
`(1500\pi )/(3)`

= 500π

= 1570.8

≈ 1571 in³

Therefore, Option (3) is correct.