Question

Raddii of three solid spheres are 3cm,4cm and 5cm.Find the radius of the new sphere which is made by melting the three spheres​

Answer 1

Answer:

here is your answer

Step-by-step explanation:

Let R be the radius of the new sphere.

Volume of new sphere = sum of volumes of three spheres

= (3 cm)3 + (4 cm)3 + (5 cm)3

= 27 cm3 + 64 cm3 + 125 cm3

= 216 cm3

= (6 cm)3

R = 6 cm

Thus, the radius of the new sphere is 6 cm

Answer 2

Answer:

volume of the new sphere is

4/3π(3^3+4^3+5^3)cu cm

=4/3π(27+64+125)cu cm

=4/3π*216 cu cm

let the radius of the new sphere is r

so,

4/3πr^3=4/3π*216

=> r^3=216=6^3

=> r=6

radius if the new sphere is 6 cm