washing tub in the shape of a frustrum of a cone has 21 CM. The radii of the circular top and the bottom are 20cm and 15CM respectively. what is the capacity of the tub?
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Hi there!
Here,
→ Height, h = 21 cm
→ Radius, r = 15 cm
→ Radius, R = 20 cm
∴ Capacity of Tub (frustum) = 1 / 3πh ( r² + rR + R² )
= 1 / 3 × 22 / 7 × 21 ( 15² + 15(20) + 20² )
= 22 × ( 225 + 300 + 400 )
= 22 × 925 cm³
= 20,350 cm³
Hence, The required answer is :-
Capacity of Tub = 20, 350 cm³
Hope it helps! :)
Here,
→ Height, h = 21 cm
→ Radius, r = 15 cm
→ Radius, R = 20 cm
∴ Capacity of Tub (frustum) = 1 / 3πh ( r² + rR + R² )
= 1 / 3 × 22 / 7 × 21 ( 15² + 15(20) + 20² )
= 22 × ( 225 + 300 + 400 )
= 22 × 925 cm³
= 20,350 cm³
Hence, The required answer is :-
Capacity of Tub = 20, 350 cm³
Hope it helps! :)
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