Given :-

• Radius of CYLINDRICAL drum is 7 cm  

• Height of cylindrical drum is 14 cm

To Find :-

• Curved surface area of cylindrical drum  

• TOTAL surface area of cylindrical drum

• Volume of cylindrical drum

Solution :-

~Here, we’re given the radius and height of a cylindrical drum and we need to find Curved Surface Area ( CSA ) , Total Surface area ( TSA ) and Volume of that cylindrical drum. We can easily find them by putting the values in their formulas.

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As we KNOW that ,

✬ CSA of cylinder = 2πrh

✬ TSA of cylinder = 2πr( r + h )

✬ Volume of cylinder = πr²h

Where,

• h is height
• r is radius
• π is 22/7

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Finding the CSA :-

⟶ 2 × 22/7 × 7 cm × 14 cm

⟶ 2 × 22 × 1 cm × 14 cm

⟶ 44 × 1 cm × 14 cm

⟶ 616 cm²  

Finding the TSA :-

⟶ 2 × 22/7 × 7 cm ×  ( 7 cm + 14 cm )

⟶ 2 × 22 × 1 cm × 21 cm

⟶ 44 × 1 cm × 21 cm

⟶ 924 cm²  

Finding the volume :-

⟶ 22/7 × 7 cm × 7 cm × 14 cm

⟶ 22 × 1 cm × 7 cm × 14 cm

⟶ 2156 cm³

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HENCE,  

》 CSA of cylinder is 616 cm²

》TSA of cylinder is 924 cm²

》  Volume of cylinder is 2156 cm³