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Glencoe Math: Course 3, Volume 2

GM

Glencoe Math: Course 3, Volume 2 View details

5. Surface Area of Cones

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Exercise 31 Page 638

Use the formula for the surface area of a cylinder.

829.4 cm^2

Practice makes perfect

The given solid is a cylinder.

To calculate the surface area of a cylinder, we can use the following formula. S=2π rh+2π r^2 In this formula, r is the radius of the base and h is the height of the cylinder. By substituting r with 6 and h with 16 into the formula, we can calculate the value of S. Let's do it!

S=2π rh+2π r^2

r= 6, h= 16

S=2π( 6)( 16)+2π( 6)^2

▼

Evaluate right-hand side

Calculate power

S=2π( 6)(16)+2π(36)

Multiply

S=192π+72π

Add terms

S=264π

Use a calculator

S=829.380460...

Round to 1 decimal place(s)

S≈ 829.4

The surface area of the cylinder is about 829.4 square centimeters.

Subchapter links

Guided Practice p.634

Independent Practice p.635-636

H.O.T. Problems p.636

Extra Practice p.637

Standardized Test Practice p.638

Common Core Review p.638