Question

How many solid spheres of radii 6 cm can be made from a cylinder of base radius
4 cm and length 90 cm?​

Answer 1

Step-by-step explanation:

Solid sphere volume v=

3

4

πr

3

rv=

3

4

×

7

22

×3

3

cm

3

r

v=4×π×9=36πcm

3

Volume of cylinder =πR

2

h=π×(

2

4

)

2

×45cm

or v=180πcm

3

n= no of spheres =

v

v

=

36πcm

3

180πcm

3

⇒

n=5