Mathematics
NULL
Medium
Question
If the radius of a circle is reduced by 50%, its area is reduced by _________?
A
25%
B
50%
C
75%
✓ Official correct answer
D
100%
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
25%
No member explanations yet for this option.
B
50%
No member explanations yet for this option.
C
75%
No member explanations yet for this option.
D
100%
No member explanations yet for this option.
Explanation
New area = (1/2)² = 1/4 of original. Reduction = 3/4 = 75%.