The area of a trapezium is 80cm² and the length of one of the parallel sides is 7cm and its height is 16cm. Find the length of the other parallel side?
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Step-by-step explanation:
area of trapezium is
A = h(a+b)/2 , where h is height and a and b are parallel sides length
therefore
80 = 16(7+b)/2
160 = 16(7+b)
10 = 7+b
b = 3cm
so the length of other parallel side is 3cm
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