Question

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?

Answer 1

Given: 

Radius of the base of a cylinder = 20 cm 

Height of cylinder = 10 m = 1000 cm [1m = 100 cm] 

Volume of the cylindrical pillar = πR²H 

= \(({22\over7}×202×1000)\) cm³ 

= \(8800000 \over7\) cm³ 

or 8.87 m³ 

Therefore, volume of 14 pillars 

= 14 x 8.87 m³ 

= 17.6 m³