Question

A solid sphere of radius 3 cm is melted and then recast into spherical balls each of diameter 0.6cm. Fint the number of balls

Answer 1

Answer:

Step-by-step explanation:

Volume of sphere

R=3cm

V=4/3πR^3

=4/3 * 3*3*3*22/7

=4*9*22/7

Volume of one ball

r=. 6cm

V=4/3πR^3

V=4/3*3/5*3/5*3/5*22/7

=4*9*22/125*7

No of balls=4*9*22*/7 ÷ 4*9*22/125*7

= 125 balls

Answer 2

Answer:

Let the radius of solid sphere be r₁ and for spherical ball be r₂ .

Now :

Number of ball = Volume of solid sphere / volume of spherical ball .

= 4 / 3 π r₁³ / 4 / 3 π r₂³

= 4 / 3 π × 3 × 3 × 3 / 4 / 3 π × 0.3 × 0.3 × 0.3

=  3 × 3 × 3 / 0.3 × 0.3 × 0.3

= 1000 .

Therefore , Number of balls is 1000 .