If the height of a right circular cylind

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 3D

Question:

If the height of a right circular cylinder is 10 cm and the curved surface area is 440 cm², then what is its radius?

Options:

17.5 cm

10.5 cm

14 cm

7 cm

Correct Answer:

7 cm

Explanation:

We know that,

Curved surface area of the cylinder = 2πrh

Height = 10 cm

Radius = r cm.

2 πrh = 440

= 2 × \(\frac{22}{7}\) × r × 10 = 440

= r = 7 cm