The diameter of a cylinder is 14 cm and its height is 9 cm. Find the total surface area of the cylinder.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 704 cm2.
We know that,
The total Surface Area = 2πr2 + 2πrh
here, r = radius, h = height
Diameter = 14 cm
Radius = 14/2 = 7 cm
Now,
The total Surface Area = 2πr(r + h)
⇒ 2 × 22/7 × 7(7 + 9)
⇒ 2 × 22/7 × 7 × 16
⇒ 2 × 22 × 16 = 704 cm2