Question

trapezium parral side are 15 and 30m and the height is 4m. find its area

Answer 1

Length of parallel sides = 15 cm and 20 cm =0.15 m and 0.2 mHeight of block =10 cm =0.1 m∴Area of trapezium block =12×(Sum of parallel sides)×Height=12×(0.15+0.2)×0.1=0.0175 m2.Cost of painting 1m2=Rs 0.25Cost of painting 0.0175m2=Rs 0.25×0.0175=Rs 4.375×10-3

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Answer 2

area of trapezium = 1/2 *( 15+30)*4
= 90