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The pillars of a temple are cylindrically shaped. If each pillar has a circular base of radius $20 cm$ and height $10 m$ , how much concrete mixture would be required to build 14 such pillars?

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17.6 m 3

17.5 m 3

17.4 m 3

17.3 m 3

answer is A.

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Detailed Solution

Given- radius of the pillar = 20 cm.
Height of the pillars = 10 m.
=10

\times

100=1000cm

Volume of 1 pillar = π r 2 h = 227 (20) 2 (1000) = 22 × 400 × 1000 7 = 88000007 cm 3

Now, we will calculate the volume of 14 pillars.

Volume of 14 pillar = 88000007 × (14) = 17600000 cm 3 = 176000001000000 m 3 = 17.6 m 3

Thus,

17.6 m 3

concrete mixture would be required to build pillars.
Hence, option 1 is the correct option.

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