If the radius of a circle is doubled, its area becomes:

Q: If the radius of a circle is doubled, its area becomes:

The correct answer is C. The area of a circle is πr². When radius is doubled (2r), the new area becomes π(2r)² = 4πr², which is 4 times the original area. Remember: when radius doubles, area becomes 4 times because we square the radius in the formula.

Question

Accepted Answer

The area of a circle is πr². When radius is doubled (2r), the new area becomes π(2r)² = 4πr², which is 4 times the original area. Remember: when radius doubles, area becomes 4 times because we square the radius in the formula.