If the curved surface area of a closed cylinder is 225 cm2 and the area of its base is 169 cm2 , then find the total surface area of the cylinder.
Answer & explanation
Correct answer: option 3
We already know that,
Curved surface area of cylinder = 2πrh
Area of the base = πr2
Total surface area of cylinder = 2πr(r+h)
we have,
Curved surface Area = 225 cm2
Area of base = 169 cm2
We also know that
= Total surface area = 2×πr2+2πrh
= Total surface area = 2 × 169 + 225
= Total surface area = 338 + 225 = 563 cm2