The pillars of a temple are cylindrically shaped (see Fig. 13.26). 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?

Explanation

Considering it to a solid cylinder
for amount of concrete making are cylinder = volume of cylinder
Amount of concrete mixture required to fild 14 such pillars =14× volume of a cylinder−−−−−(1)
If Volume of cylinder where =`pir^2h`

x=radius
h=height

Volume =`pixxx^2xxh`

=`pixx20xx20xx10 cm^3`

=`4000π cm^3`

=`4000xx3.142 cm^3`

=`12568 cm^3`

Substituting it in equation (1)
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