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UPSC CDS Math Volume and Surface Area Questions

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Question : 101

Total: 104

For a plot of land of 100 m x 80 m, the level is to be raised by spreading the earth from a stack of a rectangular base 10 m x 8 m with vertical section being a trapezium of height 2 m. The top of the stack is 8 m x 5 m. By how many centimeters can the level be raised ?

3 cm
2.5 cm
2 cm
1.5 cm

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