The curved surface area of right circular cylinder of height 14cm is 110 cm2. What is the base diameter of the cylinder ? (Use π = 22/7 ).
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 2.5 cm
The height (h) of the right circular cylinder = 14 cm
The curved surface area of the cylinder = 110 cm2
CSA = 2πrh [where r is the radius and h is the height]
ATQ -
110 = 2 × (22/7) × r × 14
110 = 88r
r = 110/88 = 1.25 cm
Diameter = 2r = 2(1.25) = 2.5 cm