Question

a closed cylinder of tank of radius 7m and height 3m is made from a sheet of metal how much sheet of metal is required​

Answer 1

Step-by-step explanation:

Amount of sheet required to make tank=total surface area of cylinder

r=7m h=3m

=2\pi r\left(r+h\right)2πr(r+h)

==2\times\frac{22}{7}\times7\left(7+3\right)=2×

7

22

×7(7+3)

=44\times1044×10

=440\ m^2440 m

2