Math, asked by parmanand16011982, 2 months ago

veranda of school is supported by 10 pillers . each pillar is 4m high and its diameter 63cm . how mach concrete mixture is required to construct the pillars? the outer covered surface is to be whitewashed. calculate to area to be whitewashed. (in step to step) ​

Answers

Answered by hdewangan1278
0

15.84 cm^2 area to be whitewashed.

Step-by-step explanation:

No of pillars = 10

Height = 4m

Diameter = 63cm = 0.63m

Radius = 0.63/2

Total surface area = 2πr (R+ H)

= 2×22×0.63/7 (0.63+4)

= 18.3348 cm^2

CSA to be whitewashed = 2πrh

= 2×22/7×0.63×4

= 15.84 cm^2

15.84 cm^2 area to be whitewashed.

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