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Glencoe Math: Course 2, Volume 2

GM

Glencoe Math: Course 2, Volume 2 View details

3. Area of Composite Figures

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Exercise 25 Page 638

Use the formula for the area of a parallelogram.

About 3.7cm^2

Practice makes perfect

Let's consider the given parallelogram.

Triangle

We want to find the area of the parallelogram. We can use the following formula to do it. Area= b h In this formula, b is the length of the base and h is the height. For our parallelogram, we will substitute b= 2.3 for the base and h= 1.6 for the height into the formula to calculate its area.

Area=bh

b= 2.3, h= 1.6

Area= 2.3( 1.6)

Multiply

Area=3.68

Round to 1 decimal place(s)

Area≈ 3.7

The area of the parallelogram is about 3.7 square centimeters.

Subchapter links

Guided Practice p.634

Independent Practice p.635-636

H.O.T. Problems p.636

Standardized Test Practice p.636-638

Extra Practice p.637

Common Core Review p.638