NCERT · Class 7 · Mathematics · Perimeter and AreaWhat is the circumference of a circle with radius 'r'?
Step-by-Step Solution
The distance around a circle is called its circumference. The formula for the circumference of a circle is 2πr, where r is the radius.
Detailed Options Breakdown
Option : πr²
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Perimeter and Area.
Option 1: 2πr (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: πr
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Perimeter and Area.
Option 3: 2πr²
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Perimeter and Area.
💡 Study Guide: This question tests core syllabus concepts from Perimeter and Area. For formulas, key summaries, and mock exam reference guides, read the full Perimeter and Area Revision Notes.