Question

find the radius of a sphere of volum 38808cm what will be the cost of painting the surface at RS2 per sq cm​

Answer 1

Answer:

Volume of sphere =

3

4

πr

3

=38808

11×3528=

3

4

×

7

22

×r

3

r

3

=21×21×21r=21

surface area =4πr

2

=

7

4×22

×(21)

2

=5544cm

2

Answer 2

Step-by-step explanation:

Volume of the sphere =38808 cm^3

We know that volume of the sphere = 3\4

πr =3

Therefore,3/4

πr^3=38808

r ^3 =9261

r=21 cm

We know that the surface area of the sphere

=4πr^2

=4π×21^2

=5544 cm^2