Question

7) A closed cylindrical tank of radius 14 cm and height 5 cm is made from a sheet of metal . How much sheet of metal is required ?

Answer 1

The required sheet of metal is 528 m².

It is given that a closed cylindrical tank of diameter 14m and height 5m is made from a sheet of metal. where, r is radius and h is height of the cylinder. Substitute r=7, and h=5 in the above formula. Therefore, the required sheet of metal is 528 m²

Answer 2

Answer:

1672 cm²

Step-by-step explanation:

GIVEN :- In the right circular cylinder,

Radius = 14 cm

And, Height = 5 cm

TO FIND:- Area of sheet of metal required for it.

SOLUTION:-

TSA of cylinder

$= 2\pi r(h + r) \\ = 2\pi14(5 + 14) \\ = 2\pi14 \times 19 \\ = 2 \times \frac{22}{7} \times 14 \times 19 \\ = 1672 \: {cm}^{2}$