Question

the area of trapezium is 34cm sq. and the length of one of the parallel side is 10 cm and its height is 4cm find the length of the other parallel side

Answer 1

Area of trapezium=
H x sum of Parallel sides/2

Let parallel side be x cm
4 x (10+x)/2 = 34
40 + 4x = 68
4x = 28
X = 7 Ans !

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Answer 2

given area of trapezium = 34cmsq
one side = 10cm
height = 4cm
let second side = l

as area of trapezium = 1/2(sum of parallel side )*h
so
34 = 1/2(10+l)*4

then
17 = 10+l
l=7cm

thus length of second side = 7cm

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