Question

The pillars of temple are shaped Cylindrical .if each pillar has a circular base of radius 20cm and height 7m then find the quantity of concrete mixture is used to build20 such pillars Also find the cost of concrete mixture at the rate of rs.200 per m³(=22/7)
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Answer 1

Answer:

Step-by-step explanation:

volume of each pillar, V= π*r²*h

here r=20cm=0.2m, h=7m

V=22/7*(0.2)²*7=0.88m³

quanitity of concrete for 20 pillars=20*0.88=17.6 m³

cost of concrete= 17.6*200= Rs. 3520

Answer 2

Answer

Quantity of concrete mixture = 17.60 m³

Cost = Rs. 3,520

Step by step explanation

100 cm = 1 m

20 cm = 0.2 m

Volume of 1 pillar = πr²h

22/7 * 0.2 * 0.2 * 7

= o.88 m³

Volume of 20 pillars = 0.88 * 20

= 17.60 m³

Cost = 17.60 *200

          = Rs 3,560

Hope you understood the question clearly.

Thanks for seeing.