Question
A cylinder has a curved surface area of 616 cm² and its
height is 14 cm. What will be the diameter of the cylinder?Solution
ATQ,
Let the radius of the cylinder be 'r' cm.
Curved surface area of the cylinder = 2 × π × radius × height
ATQ,
2 × (22/7) × 14 × r = 616
So, r = (616 × 7) ÷ (2 × 22 × 14) = 7
Therefore, diameter of the cylinder = 2 × r = 2 × 7 = 14 cm
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