teana17 teana17

09-04-2016
Mathematics

Answered

A trapezoid has an area of 80.75 sq. in., and its two bases are 7 and 12 inches long. Find the height of the trapezoid. a. 8.5 in. c. 8.75 in. b. 7 in. d. 9.2 in.

Verified Answer :

Sanarah Sanarah

09-04-2016

The formula is area of trapezoid = average base x average height

We're going to do this in reverse.

Area = 80.75
[(7 + 12)/2] = 9.5 (height)
height = 80.75 / 9.5 = 8.5

The height is 8.5, so the answer is D.

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