Question

find the total surface area of a closed cylindrical drum if its diameter is 50 cm and height is 45cm​

Answer 1

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Answer 2

The total surface area of a closed cylindrical drum is 11000 sq.cm.

Step-by-step explanation:

Diameter of cylindrical drum = 50 cm

Radius of drum =$\frac{50}{2}= 25 cm$

Height of drum = 45 cm

Total surface area of drum = $2 \pi r h + 2 \pi r^2$

                                             = $2 \times \frac{22}{7} \times 25 \times 45 + 2 \times \frac{22}{7} \times (25)^2$

                                            =$11000 cm^2$

Hence  the total surface area of a closed cylindrical drum is 11000 sq.cm.

#Learn more:

If the diameter of a

cylindrical pot is 9 cm and its height is 95.5 cm then what

is the total surface area of pot? Find it​

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