the area of trapezium is 91 cm square and its height is 7 cm if one of the parallel side is longer than the other by 8 cm find the two parallel sides
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Area of trapezium is 1/2(a+b)h where a and b are parallel sides and h is height
so,
91 = 1/2(a+a+8)7
91/7 = 1/2(2a+8)
13 = 1/2(2a+8)
26 = 2a+8
a = (26-8)/2
a = 9 cm
a+8 = 17 cm
Therefore the parallel sides are 8 and 17 cm
so,
91 = 1/2(a+a+8)7
91/7 = 1/2(2a+8)
13 = 1/2(2a+8)
26 = 2a+8
a = (26-8)/2
a = 9 cm
a+8 = 17 cm
Therefore the parallel sides are 8 and 17 cm
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