Question

a cylindrical chemical drum is 20.5 cm long and the radius of the drum is 42 calculate the cost of painting the drum @ rupees 0.75 CM square​

Answer 1

Answer:

height of cylinder = 20.5cm

radius = 42cm

total surface area of cylinder =

$2\pi r(r + h)$

2×22/7×42×(42+20.5)

=7412.5cm square