Question

Q no. 13 please fast

Answer 1

Answer:

the density of the metal is going to remain same whatever be the shape is.

therefore , density of any material is

d = mass /volume     <d is density>

now given d = 5gms/1cm^3 =5gms/cm^3-----------------(i)

now finding the volume of the cylinder

that is π x r^2 x height of the cylinder

this value is coming to be

22/7 x 10.5 x 10.5 x 60

= 20709 cm^3

let the mass of the cylinder be Y kg

now putting it into the formula of the density

d =  Y in gms / 20709 -----------------------(ii)

now eq (i) = eq (ii)

5 = Y/20709

=> Y = 20709 x 5

=>Y = 103950 gms

converting it into kgs we get

103950 / 1000

= 103.95 kg (ANS)