The area of a trapezium with height 14cm is 504cm2. If the parallel sides are in the ratio 4:5, find their lengths.
30cm,42cm.
32cm,40cm.
32cm,42cm.
30cm,40cm.
A
32cm,40cm.
B
30cm,42cm.
C
32cm,42cm.
D
30cm,40cm.
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Solution
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Area of trapezium=12(sum of parallel opposite side)(height) Let parallel side are 4x,5x 504=12(4x+5x)(14) (504)(2)9(14)=x x=8 side of one side=4(8)=32cm,5(8)=40cm
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