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What is the approximate volume of the composite figure? Use

22/7
for pie. Round to the nearest hundredth. Enter your answer in the box.
3 cm
14 cm

About ___cm³

What is the approximate volume of the composite figure? Use 22/7 for pie. Round to-example-1

1 Answer

2 votes

Answer:

188.57 cm³

Explanation:

You want the total volume of a cone of height 14 cm topped by a hemisphere of radius 3 cm.

Volume

The volume of the hemisphere is ...

V = 2/3πr³

The volume of the cone is ...

V = 1/3πr²h

The sum of these volumes is ...

V = 2/3πr³ +1/3πr²h = (π/3)r²(2r+h)

V = (22/21)(3 cm)²(2·3 cm +14 cm) = (22/21)(9)(20) cm³

V ≈ 188.57 cm³

The volume of the figure is about 188.57 cm³.

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What is the approximate volume of the composite figure? Use 22/7 for pie. Round to-example-1
User Terry Wilcox
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