Question

find the weight of a solid cylinder of radius 10.5 cm and height 60 cm, if the material of the cylinder weighs 5 grams per cu. cm.

Answer 1

Find the volume:

Volume = πr²h

Volume = π(10.5)²(60) = 20790 cm³

.

Find the weight

1 cm³ = 5g

20790 cm³ = 5 x 20790 = 103950g = 103 kg 950g

.

Answer: The cylinder weighs 103 kg 950g

Answer 2

Answer:

Given,

Radius= 10.5 cm

Diameter = 60 cm

Volume of cylinder = πr²h

22/7×10.5×10.5×60

= 20790 cm³

Weight = 1cm³=5g

20790cm³ = 5×20790

= 103.95 kg