Question -
Answer -
Given,
Radius of eachcircular disc = r = 1.5/2 = 0.75 cm
Height of eachcircular disc = h = 0.2 cm
Radius of cylinder = R= 4.5/ 2 = 2.25 cm
Height of cylinder = H= 10 cm
So, the number ofmetallic discs required is given by n
n = Volume of cylinder/ volume of each circular disc
n = πR2H/πr2h
n = (2.25)2(10)/(0.75)2(0.2)
n = 3 x 3 x 50 = 450
Therefore, 450metallic discs are required.