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Glencoe Math: Course 3, Volume 2

GM

Glencoe Math: Course 3, Volume 2 View details

2. Volume of Cones

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Exercise 34 Page 604

Recall the formula for the volume of a cylinder.

Approximately 129.5 m^3

Practice makes perfect

A cylinder has a radius of 2.9 meters and a height of 4.9 meters. Let's start by drawing it.

The volume of a cylinder with the radius r and height h can be calculated by the following formula. V=π r^2 h Here the r is the radius and h is the height. We have enough information to find the volume of the cylinder.

V=π r^2 h

r= 2.9, h= 4.9

V=π ( 2.9)^2 ( 4.9)

▼

Evaluate right-hand side

Calculate power

V=π( 8.41)( 4.9)

Multiply

V= π (41.209)

Use a calculator

V= 129.461892...

Round to 1 decimal place(s)

V≈ 129.5

The approximate volume of the given cylinder is 129.5 cubic meters.

Subchapter links

Guided Practice p.600

Independent Practice p.601-602

H.O.T. Problems p.602

Standardized Test Practice p.602-604

Extra Practice p.603

Common Core Review p.604