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Glencoe Math: Course 3, Volume 2

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Glencoe Math: Course 3, Volume 2 View details

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Exercise 5 Page 586

Use the formula for area of a triangle.

72in.^2

Practice makes perfect

Here we will use the formula for calculating the area of a triangle. A=1/2bhLet's consider the given figure.

Now we substitute the value of the base, b= 18, and the value of the height, h= 8, into the formula to calculate A.

A=1/2bh

b= 18, h= 8

A=1/2( 18)( 8)

▼

Simplify

MoveRightFacToNum

a/c* b = a* b/c

A=18/2* 8

Calculate quotient

A=9*8

Multiply

A=72

The area of the triangle is 72 square inches.

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Quick Check p.586