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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 \dots

Round to $1$ decimal place(s)

V \approx 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