A wooden cylindrical pole is 7m high and its base radius is 10cm. Find

1.	A wooden cylindrical pole is 7m high and its base radius is 10cm. Find its weight if the wood weighs 225kg per cubic meter.
Answer» Given r = 7m and h=10 cm But we know that volume of the cylinder = πr²h V = 22/7 × 0.1 × 0.1 × 7 V = 0.22 cm³ Given weight of the wood 225kg per cubic meter Weight of the pole = 0.22 × 225 = 49.5 kg

A wooden cylindrical pole is 7m high and its base radius is 10cm. Find its weight if the wood weighs 225kg per cubic meter.

Answer»

Given r = 7m and h=10 cm

But we know that volume of the cylinder = πr²h

V = 22/7 × 0.1 × 0.1 × 7

V = 0.22 cm³

Given weight of the wood 225kg per cubic meter

Weight of the pole = 0.22 × 225 = 49.5 kg