Q. 95.0( 4 Votes )
A drinking glass
Answer :
Given: Height of glass = h = 21 cm
Diameter of lower circular end of glass = 4 cm
Diameter of upper circular end of glass = 6 cm
∴ Radius of lower circular end = r = 4/2 = 2 cm
∴ Radius of upper circular end = R = 6/2 = 3 cm
Capacity of glass = volume of frustum
= 22 × (9 + 4 + 6)
= 22 × 19
= 418 cm3
∴ Capacity of glass = 418 cm3
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