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Envision Math 2.0: Grade 6, Volume 2

EM

Envision Math 2.0: Grade 6, Volume 2 View details

2. Solve Triangle Area Problems

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Exercise 5 Page 396

Use the formula for the area of a triangle.

7.35in.^2

Practice makes perfect

Let's take a look at the given triangle.

Remember the formula for the area of a triangle. A=1/2bh In this formula, b is the length of the base and h is the height. For our triangle, we will substitute b= 4.2 inches for the base and h= 3.5 inches for the height into the formula to calculate A. Let's do this!

A=1/2bh

b= 4.2, h= 3.5

A=1/2( 4.2)( 3.5)

MoveRightFacToNumOne

1/b* a = a/b

A=4.2/2* 3.5

Calculate quotient

A=2.1 * 3.5

Multiply

A=7.35

The area of the triangle is 7.35 square inches.

Subchapter links

Do You Understand? p.396

Do You Know How? p.396

Practice & Problem Solving p.397-398

Assessment Practice p.398