Question

A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How much sheet of metal is required?​

Answer 1

☆ Solution ☆

Given :-

• A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal .

To Find :-

• How much sheet of metal is required?

Step-by-Step-Explaination :-

As we know that :-

Area of closed cylinder = Curved surface area of cylinder = 2 ( Area of circle )

=> 2πrh + 2πr²

=> 2πrh ( r + h )

Here,

π = 22/7

Substituting the values in the Formula.

We get,

=> 2 × 22/7 × 7 ( 7 × 3 )

=> 2 × 20 ( 10 )

=> 44 × 10

=> 440 cm²

Hence Solved !

Answer 2

Answer:

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