Question

a wooden pole is 7 m high and 20 cm in diameter . Find its weight if the wood weight 225 kg per m3

Answer 1

Radius=10cm=0.1m
height=7m
volume=
$\pi \times {r}^{2} \times h$
=22/7×0.1×0.1×7
=0.22m^3
density=225g/m^3
225=mass/0.22
=>mass=225×0.22=49.5 grams

Answer 2

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