It is required to make a closed cylindrical tank of height 1 m and the

1.	It is required to make a closed cylindrical tank of height 1 m and the base diameter of 140 cm from a metal sheet. How many square meters of the sheet are required for the same?
Answer» Height of cylindrical tank (h) = 1 m Base radius of cylindrical tank (r) = diameter/2 = 140/2 cm = 70 cm = 0.7 m [1 m = 100 cm] Now, Area of sheet required = Total surface area of tank (TSA) = 2πr(h + r) =2 x 3.14 x 0.7(1 + 0.7) = 7.48 Therefore, 7.48 m² metal sheet is required to make required closed cylindrical tank.

It is required to make a closed cylindrical tank of height 1 m and the base diameter of 140 cm from a metal sheet. How many square meters of the sheet are required for the same?

Answer»

Height of cylindrical tank (h) = 1 m

Base radius of cylindrical tank (r) = diameter/2

= 140/2 cm

= 70 cm

= 0.7 m

[1 m = 100 cm]

Now,

Area of sheet required = Total surface area of tank (TSA) = 2πr(h + r)

=2 x 3.14 x 0.7(1 + 0.7)

= 7.48

Therefore, 7.48 m² metal sheet is required to make required closed cylindrical tank.