Question

Q5. The capacity of a closed
cylindrical vessel of height 1 m is
15400 litres. How many square
metres of metal sheet would be
needed to make it?
*​

Answer 1

Answer:

30,799.381652m² of metal sheet would be required

Step-by-step explanation:

We know that the volume/Capacity of the Vessel is 15400 litres

Now we also know that Volume of a closed cylider is πr²h

Now we complete the equation, π X radius²  X  height = 15400

furthermore,

3.14159(Value of PI) x r² x 1 = 15400

r² = 15400/3.14159

r² = 4,904.458

r = √4,904.458

r = 70.031

Finally,

Total Surface Area(Cylinder is a closed Cylinder), Because we need to know how much it required to make that  cylinder

Total surface area of cylinder is 2πr(r + h)

we calculate

2 x 3.14159(Value of PI) x 70.031(Value of Radius from Above) x 70.031  + 1

= 30,799.38165m²

-Hope you understood

-Nayan a 9th Grader

-From Nepal