Question

1. Find the volume of hemisphere whose radius is 4.2cm
​

Answer 1

Answer:

=310.464 cm³

It is given that

Radius of the sphere =4.2 cm

We know that

Volume of the sphere =

3

4

πr

3

By substituting the values

Volume of the sphere =

3

4

×

7

22

×4.2

3

So we get

Volume of the sphere =310.464 cm

3

We know that

Surface area of the sphere =4πr

2

By substituting the values

Surface area of the sphere =4×

7

22

×4.2

2

So we get

Surface area of the sphere =221.76 cm

2

Answer 2

Answer:

I gave the answer in image.

Step-by-step explanation:

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