Question

A cylindrical container is 84 cm high and has base radius of 4.2 cm. find the cost of painting is curved surface at the rate of ₹8 per 100 cm​

Answer 1

Answer:

Height(h)=84cm

Radius(r)=4.2cm

C.S.A= 2πrh

=(2×22/7×42/10×84)cm^2

=22176/10cm^2

Cost of painting at ₹8/100 cm= ₹(22176/10×8/100)

=₹177.408