If the diameter of the base and the height of a cylinder are 16cm and 20 cm, respectively, then what is the total surface area of the cylinder? (Use π = 22/7)
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 1408 cm2.
Given that
The diameter of the base of a cylinder (D) is 16 cm
The radius of the cylinder (r) = D/2 = 16/2 = 8 cm
The height of a cylinder (h) is 20 cm
The total surface area of the cylinder is 2πr(r + h)
⇒ 2 × (22/7) × 8 × (8 + 20)
⇒ 352 × 28/7
⇒ 1408 cm2