Question

The dimensions of a cuboid are 44 cm ,21cm,21cm .it is melted and a cone of height 24cm is made. Find the radius of it's base

Answer 1

Answer:

Volume of Cuboid = Volume of Cone

Volume of Cuboid = lbh

l = 44 cm

b = h = 21 cm

so,

21*21*44 = Volume

= 19404 cm^3

Volume of Cone = 1/3πr^2h

h = 24 cm

r = ?

so,

19404 = 1/3*22/7*r*r*24

19404*3*7/22*24 = r*r

407484/528 = r*r

771.75 = r^2

√771.75 = r

27.78 cm = r

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