Question

A cylindrical vessel open at the top has a base radius 10.5cm and height 14cm.Find the cost of painting in the inner part of the vessel at the rate of Rs10 per 100cm^2

Answer 1

I hope this answer helps!!☺

Answer 2

r=10.5 cm

h=14 cm

  inner area=base area+inner curved area

base area=πr²=22/7*10.5²=346.5 cm²

Inner curved area=2πrh=2*22/7*10.5*14=924 cm²

then inner curved area=346.5+924=1270.5 cm²

10 ruppee per cm²\

so total cost=10*1270.5=12705 ruppee