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

Answer 1

split the trapezoid into a rectangle of 9 by h, and a triangle with base 9, height h, and hypotenuse 15
by Pythagoras:
h^2 + 9^2 = 15^2
h = 12

Now you have all the dimensions, add up the two areas

Answer 2

Area is 162

Answer 3

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