Question

a cylindrical vessel, without lid, has to be tin-coated including both the sides. If the radius of its base is 1/2m and its height is 1.4m, calculate the cost of tin-coating at the rate of rs.50 per 1000cm^2​

Answer 1

Answer:

2200 rs.

Step-by-step explanation:

To make all the units same we will convert m to cm .

r=1/2 m = 50 cm

h=1.4 m = 140 cm

Curved surface area = 2$\pi$rh

                                  = 2 * 22/7 * 50 * 140

                                 = 44000 cm ^2

Cost of painting= 44000 * 50 / 1000

                          = 2200 Rs.