A Hemispherical tank is made up of an iron sheet 2 cm thick. if its inner radius is 2 metre then find the volume of iron used to make the tank?
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Answer : 5074.40 m³
Step-by-step explanation:
Volume of outer
hemisphere = 2/3 × π × (202 cm)³
= 16484816/3 π
volume of inner
hemisphere = 2/3 × π × (200)³
= 16000000/3 π
Volume of
iron used = Vol. of outer hemisphere
- vol. of inner hemisphere
= 16484816/3 π - 16000000/3 π
= 161605.33 π cm³
OR = 507440.74 cm³
OR = 5074.40 m³
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