SOLUTION: The lengths of the bases of the right trapezoid are 9 cm and 18 cm. The length of the longer leg is 15 cm. Find the area of the trapezoid.

Algebra ->  Surface-area -> SOLUTION: The lengths of the bases of the right trapezoid are 9 cm and 18 cm. The length of the longer leg is 15 cm. Find the area of the trapezoid.      Log On


   



Question 1136402: The lengths of the bases of the right trapezoid are 9 cm and 18 cm. The length of the longer leg is 15 cm. Find the area of the trapezoid.
Answer by josgarithmetic(39620) About Me  (Show Source):
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This trapezoid is composed of rectangle dimensions 9 and y; and right triangle of hypotenuse 15 and one leg 9, other leg y. The height of trapezoid is y.

y%5E2%2B9%5E2=15%5E2
-
y%5E2=225-81
y%5E2=144
y=12


AREA:
%28%289%2B18%29%2F2%29%2A12

highlight%28162%29cm%5E2