Exercise 20 Page 335

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

76ft^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.

By the segment addition postulate we can say that the right edge is 6+ 7= 13 feet. Let's rotate the figure to make it easier to see the height and the bases!

In the given trapezoid we can see, that the height is 8 feet and the bases are 13 and 6 feet. We can substitute them 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( 8)( 13+ 6)

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Evaluate right-hand side

AddTerms

Add terms

A=1/2(8)(19)

Multiply

A=1/2* 152

MoveRightFacToNumOne