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Deepak Bora
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A wooden pole is 7 m high and 20 cm in diameter. Find its weight if the wood weighs 225 kg per m cube.

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An Important Question of class 10 Based on Mensuration Chapter of M.L Aggarwal for ICSE BOARD.
Here a wooden pole is given with its height and diameter.
Find its weight if the wood weighs 225 kg per m cube.
This is the Question Number 08, Exercise 17.1 of M.L Aggarwal.

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  1. Given height of the pole, h = 7 m

    Diameter of the pole, d = 20 cm

    radius, r = d/2 = 20/2 = 10 cm = 0.1m

    Volume of the pole = r2h

    = (22/7)×0.12×7

    = 0.22 m3

    Weight of wood per m3 = 225 kg

    weight of 0.22 m3 wood = 225×0.22 = 49.5 kg

    Hence the weight of the wood is 49.5 kg.

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