Question

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Answer 1

Answer:

Total surface area of the hemisphere =462cm

2

Total surface area of the hemisphere =2πr

2

⇒462=3πr

2

⇒r=7 cm

Volume of hemisphere =

3

2

πr

3

V=

3

2

×

7

22

×7

3

V=718.67cm

3

Answer 2

Answer:

(A) 3πr²

(B). 2/3πr³

1) Total surface area of hemisphere is 3πr²

2) The volume of hemisphere is 2/3πr³