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Pearson Algebra 2 Common Core, 2011

PA

Pearson Algebra 2 Common Core, 2011 View details

3. Right Triangles and Trigonometric Ratios

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Exercise 65 Page 926

Use the formula for area of a triangle.

32.76mm^2

Practice makes perfect

We will use the formula for calculating the area of a triangle. A=1/2bh We need to substitute the value of the base, b= 5.2mm, and the value of the height, h= 12.6 mm, into the formula to calculate A.

A=1/2bh

b= 5.2 mm, h= 12.6mm

A=1/2( 5.2 mm)( 12.6mm)

Multiply

A=1/2(65.52 mm^2)

MoveRightFacToNumOne

1/b* a = a/b

A=65.52 mm^2/2

Calculate quotient

A=32.76 mm^2

The area of the triangle is 32.76mm^2.

Subchapter links

Lesson Check p.923

Practice and Problem-Solving Exercises p.924-926

Standardized Test Prep p.926

Mixed Review p.926