Question

The area of a trapezium is 72 cm². The length of one of the parallel sides is 10 cm and the height is 12 cm. Find the length of the other parallel side.

Answer 1

(1/2)(12)(10 + s) = 72

12(10 + s) = 144

10 + s = 12

s = 2

The length of the other parallel side is 2 cm.