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8. A series of steps lead to a temple. The number of steps is 20. Each step has a rise of15cm and a tread 40 cm. Each step has a rise of 15 cm and a tread 40 cm. Each step is10m long. Calculate the volume of concrete required to build the stair. in Ap |
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Answer» Answer: 1 STEP Height=15 cm=0.15 m Breadth=40 cm=0.4 m Length=10 m VOLUME=l×b×h =10×0.4×0.15 =0.6 m³ 1 step Volume=0.6 m³ 20 STEPS =0.6×20=12 m³ \boxed{\mathbf{Volume={12M}^{3}}} Volume=12m
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