Question

A closed cylindrical tank of radius 14m and height 3m is Made from a sheet of metal. How much sheet of metal is required? *
​

Answer 1

Answer:

1848m²

Step-by-step explanation:

Sheet of metal required = total surface area of the cylinder

Radius(r) = 14m

Height(h) = 3m

Total surface area = πr²h

= (22/7×14×14×3)m²

= (22×2×14×3)m²

= 1848m²

Answer 2

Answer:

radius = 14 m

height = 3 m

Metal sheet required to make closed cylindrical tank = Total surface area of cylinder =

$2\pi \: r(h + r) \\ = 2 \times \frac{22}{7} \times 14(14 + 3) \\ = 88 \times 17 \\ = 1496 \: {m}^{2}$