Question

a solid metallic sphere of diameter 21 cm is meted and made into a smaller cones each of diameter 3.5c and height 3cm find the number of cones so formes​

Answer 1

Refer to the attachment:

SOLUTION: 504 cones

Answer 2

Step-by-step explanation:

Radius of Sphere =21/2 cm

Volume of sphere =4/3 Pi r ³

Therefore, Volume of sphere = 4/3 Pi (21/2)³ cm³

=4851 cm³ ... (1)

Let the total no. of cones formed be x

Radius of cone = 3.5/2 cm

Height of cone = 3 cm

Volume of cone = 1/3 Pi r² h

= 9.625cm ³ .....(2)

From equation 1 and 2

4851 cm ³ = x (9.625cm³)

x= 504 cones

Hope this helps... :)