a drinking glass is in the shape of a frustrum of a cone of height 14cm.the diameter of its two circular ends are 4cm and 2cm.find the capacity of the glass
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h=14cm
d1=4, d2=2
r1=2,r2=1..........................r=1/2d
capacity of drinking glass:
1/3×π[r1×r1+r2×r2+r1r2]h
1/3×22/7[2×2+1×1+2×1]14
22/21×7×14
2156/21
102.66cu.cm
Therefore the capacity of drinking glass is 102.66cu.cm.
d1=4, d2=2
r1=2,r2=1..........................r=1/2d
capacity of drinking glass:
1/3×π[r1×r1+r2×r2+r1r2]h
1/3×22/7[2×2+1×1+2×1]14
22/21×7×14
2156/21
102.66cu.cm
Therefore the capacity of drinking glass is 102.66cu.cm.
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