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Find the length of the second base of a trapezoid with one base measuring 15 feet, a height of 7. 6 feet, and an area of 98. 8 square feet.

Respuesta :

clarch19

Answer:

b = 11

Explanation:

A = 1/2h·(sum of bases)

let 'b' = unknown base

98.8 = 0.5(7.6)·(15+b)

98.8 = 3.8(15+b)

98.8 =  57 + 3.8b

41.8 = 3.8b

b = 11

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