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Multiple choice·Hard exam skill (4/5)·No calculator

Difficulty guide

The label describes the problem, not your ability.

1/5 - Foundational

Warm-up setup; checks one basic idea.

2/5 - Routine exam skill

Normal syllabus skill; usually one main rule or interpretation.

3/5 - Standard multi-step

Exam-style problem with multiple steps or a common trap.

4/5 - Hard exam skill

High-end exam problem; combines methods carefully.

5/5 - Challenge

Stretch problem beyond normal exam pressure.

Question

A cone of slant height 2525 cm is fixed on a cylinder of radius 77 cm and height 1010 cm. The cone and cylinder have the same base radius. Taking π=227\pi=\frac{22}{7}, the exposed surface area including the bottom base is
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cbse-math-10.u6.t6-4.mc.002

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