Question

how to calculate number of sheets sized 200mmx100mm to built a tank with 1400mm dia and 2000mm height

Answer 1

Total area of sheet required = total surface area of the cylinder
Total surface area= \( 2\pi r h+ 2\pi r^2 \)
r= radius
here diameter= 1400 mm
so radius = 700 mm
h= height= 2000 mm .
so
we have
Total surface Area=\(\large{ 2\times 3.14\times 700\times 2000 + 2\times 3.14 \times 700^2 }\)
we get surface area as= 11869200 mm^2
Area of one Sheet=200 \(\times\)100=20000 mm^2
So no. of sheets required= 11869200/20000=593.46 or 594 sheets