Question

An open cylindrical vessel is to be made from a sheet of metal. Find the

area of the metal required if the vessel has a height of 35 cm and radius of

14 cm.​

Answer 1

Let a=5x . Then, b=9x . Now, let c=kx . We need to find k .

b:c=4:7

⇒9x:kx=4:7

⇒9:k=4:7

⇒k=63/4

⇒a:b:c=5:9:63/4=20:36:63