A cylindrical vessel, without lid, has to be tin-coated on its both sides. If the radius of the base is 70 cm and its height is 1.4 m, calculate the cost of tin-coating at the rate Rs. 3.50 per 1000 cm².

Question

Philoid · Accepted Answer

Given,

Radius of base = 70 cm

Height = 1.4 m = 140 cm

Because tin is coated on both side of vessel so surface area of side should be calculated,

= 2(2πrh) = cm²

Area of circular bases = 2πr² =cm²

So, total area to paint = 61600+30800 = 154000 cm²

Cost of coating 1000 cm² area = Rs. 3.50

∴cost of coating 154000 cm² =

A cylindrical vessel, without lid, has to be tin-coated on its both sides. If the radius of the base is 70 cm and its height is 1.4 m, calculate the cost of tin-coating at the rate Rs. 3.50 per 1000 cm2.