Question

An iron pole is 4 m high and 28 cm in diameter. Find its weight if the iron weighs 5 g per m³​

Answer 1

Given :-

• Height of iron pole = 4 m.

• Diameter of the iron pole = 28 cm.

To Find :-

• Weight of the iron pole.

Solution :-

Radius of the pole :-

➩  28/2

➩  14 cm

Converting centimeter to meters ↓

➩  14/100

➩  0.14 m.

Volume of the iron pole :-

➩  $\sf{\pi r^2h}$

➩  22/7 × 0.14 × 0.14 × 4

➩  22 × 0.02 × 0.14 × 4

➩  0.2464 m^3.

Weight of the pole :-

➩  Volume × weight per volume.

➩  0.2464 × 50

➩  12.32 kg