find the total surface area of a cylinder if its radius is 25 cm and height is 45 cm (π= 3.14)
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Answer:
Given: For cylindrical drum
Diameter (d) = 50 cm and height (h) = 45 cm
To find: Total surface area of the cylindrical drumRead
Diameter (d) = 50 cm
/2 = 50/2 = 25 cm
Total surface area of the cylindrical drum = 2πr (h + r)
= 2 x 3.14 x 25 (45 + 25)
= 2 x 3.14 x 25 x 70
= 10,990 sq cm
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