Answers

2016-02-27T15:25:20+05:30
R= 25cm
h= 10.5cm

Volume (cylinder)= πr²h
V (30 pillars)= 30π×25×25×10.5
=30 × 22/7 × 625 × 10.5
=660×625×1.5
=618750cm³

CSA (30 pillars)=30×2πrh
=60×22/7×0.25×0.105
=60×22×0.25×0.15
=49.5m²
So total cost = 49.5×250
= 12375Rs
0