Question

First time doing mensuration, can someone enlighten me on how to find the height of the hemisphere and cone?

Answer 1

3 cm and 4 cm.

Explanation:

The height of the hemisphere is the same as its radius, 3 cm.

The height of the cone = 7 - 3 = 4 cm.

Answer 2

Explanation:

volume=
`1/3\pi  r^2h +2/3\pi r^3`[

tex]=1/3\pi *9*4+2/3\pi *3^3[/tex]

=
`12\pi +18\pi`= 30
`\pi` volume