Find the curved surface area (in cm2) of

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Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 3D

Question:

Find the curved surface area (in cm²) of a hemisphere of diameter 28 cm.

Options:

1230 cm²

1232 cm²

1234 cm²

1242 cm²

Correct Answer:

1232 cm²

Explanation:

Diameter = 28 cm

Radius (r) = 14
C. S. A. of a hemisphere = 2\(\pi \) r²

= 2 × \(\frac{22}{7}\) × 14 × 14

= 1232 cm²