Question

Some children, playing on the beach, dig out sand for making a hollow cylinder in the ground of radius 14 cm and depth 20 cm. They then use this sand to make a cone like structure of radius 14 cm. Whatis the height of the cone ?

Answer 1

Answer:

Height of cone= 60 cm

Step-by-step explanation:

cylinder

r=14cm

h=20 cm

cone

R=14 cm

H=?

volume of cylinder = volume of cone

π r^2 h = 1/3 πR^2 H

(cancelling π from both the sides)

=> (14)(14)(20)= (1/3)(14)(14)(H)

(cancelling (14)(14) from both the sides)

=> H = 20 x 3

= 60 cm

Hope it helps...

Answer 2

Step-by-step explanation:

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