Question

What is the height of the cone below?

Answer 1

15 cm

Explanation:

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Answer 2

The formula of a volume of a cone:

`V=(1)/(3)Bh[/rex]</p><p>B - area of a base</p><p>h - height</p><p>We have</p><p>[tex]V=90\ cm^3,\ B=18\ cm^2`

Substitute:

`90=(1)/(3)\cdot18\cdot h\\\\90=6h\qquad|\text{divide both sides by 6}\\\\15=h\to h=15`

Answer: 15 cm.