Question

17. A solid metallic sphere of diameter 21 cm is melted and recast into a number of smaller cones, each of
diameter 3.5 cm and height 3. cm. Find the number of cones so formed.​

Answer 1

Answer:

504 cones

Step-by-step explanation:

Volume of sphere = Volume of a cone x number of cones

Let number of cones be = n

A.T.Q

4 /3πr³= 1/3πr²h

4/3 x 22/7 x 21/2 x 21/2 x 21/2 = 1/3 x 22/7 x 3.5/2 3.5/2 x 3 x N

On Solving it we get n=504

Hope it helped :)