Question

The diametres of lower and upper ends of a buckets in form of frustum of a cone are 10 cm and 30 cm. if height is 24 cm.find area of metals sheet used

Answer 1

total area=πh/3(R^2+r^2+Rr)+πr^2
=22/7×24×3(15^2+5^2+15×5)+22/7×5^2
=22/7×24×3(225+25+75)+22/7×25
=22/7(24×3×325+25)

Answer 2

I will tell you later when I get time