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Big Ideas Math: Modeling Real Life, Grade 6

BI

Big Ideas Math: Modeling Real Life, Grade 6 View details

3. Areas of Trapezoids and Kites

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Exercise 4 Page 299

To find the area of the trapezoid, calculate one half the product of the height and the sum of the bases.

30in.^2

Practice makes perfect

Let's find the area of the given trapezoid. The area of a trapezoid is one half the product of the height and the sum of the bases. In the given trapezoid, the height is 6 inches and the bases are 2.3 inches and 7.7 inches. We can substitute these values into the formula for the area of a trapezoid. Let's do it!

A=1/2h(b_1+b_2)

SubstituteValues

Substitute values

A=1/2* 6* ( 2.3+ 7.7)

▼

Evaluate right-hand side

Add terms

A=1/2* 6* (10)

Multiply

A=1/2* 60

MoveRightFacToNumOne

1/b* a = a/b

A=60/2

Calculate quotient

A=30

The area of the trapezoid is 30 square inches.

Subchapter links

Try It p.298-300

Self-Assessment for Concepts & Skills p.300

Self-Assessment for Problem Solving p.301

Review & Refresh p.302

Concepts, Skills, & Problem Solving p.302-304