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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

4. Volumes of Prisms and Cylinders

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Exercise 8 Page 834

Use the formula for the volume of a cylinder.

665 in^3

Practice makes perfect

The volume of a cylinder with the radius r and height h can be calculated by the following formula. V=π r^2 h Since we are given both the radius and height of the cylinder, we can substitute them into the formula and calculate V.

V=π r^2 h

r= 4.2, h= 7.4

V=π ( 4.2)^2 ( 7.4)

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Simplify right-hand side

Calculate power

V=π(17.64)(12)

Multiply

V=211.68π

Use a calculator

V=665.0123329...

Round to 1 decimal place(s)

V≈ 665.0

The approximate volume of the given cylinder is 665 in^3.

Subchapter links

Exercises p.834-838