Question

4.A cylindrical vessel, without lid, has to be tin-coated including both of its
sides. If the radius of its base is 12 m and its height is 14 m, calculate the
cost of tin-coating at the rate of Rs. 50 per 1000 cm.​

Answer 1

Answer:

We have,

r=70cm, h=1.4m=140cm

∴ Area to be tin coated=2(2πrh+πr2)=2πr(2h+r)

=2×722×70(280+70)=154000cm2.

Cost of tin coating Rs. 3.50=1000cm2

Total cost=3.50×1000154000=539

Answer 2

Answer:

Answer = 539

hope it helps you