Question

A closed cylindrical tank of radius 1.5 m and height 3m is made from a sheet of metal. How much sheet is required? (π = 3.14)​

Answer 1

Answer:

42.39 m²

Step-by-step explanation:

Radius of tank = 1.5m

Height of tank = 3m

Area of tank = ?

$area \: = 2\pi r(r + h) \\ \\ = 2 \times 3.14 \times 1.5(1.5 + 3) \\ \\ = 9.42 \times 4.5 = 42.39 \: {m}^{2}$

42.39 m² sheet is required for making this tank