Question

The volume of a hemi-sphere is 2,425.5cm cube. Find it's curved surface area

Answer 1

Answer:

693 cm^2.

Step-by-step explanation:

Volume of hemisphere = 2425.5 cm^3

2/3πr^3=2425.5

2/3×22/7×r^3=2425.5

r^3 = 2425.5×3×7

__________

2×22

r^3 = 1212.75×3×7

_________

22

r^3 = 55.125×21

r^3 = 1157.625

r = 3√1157.625

r = 10.5 cm.

TSA of hemisphere = 2πr^2

= 2×22/7×(10.5)^2

= 44/7×110.25

= 44×15.75

= 693 cm^2.