Mathematics
NULL
Medium
Question
A square of area 196 cm² has side half the radius of a larger circle. The smaller circle’s radius is 3/7 of the larger. Circumference of the smaller circle?
A
12π cm
B
16π cm
C
24π cm
✓ Official correct answer
D
32π cm
Community credibility
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A
12π cm
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B
16π cm
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C
24π cm
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D
32π cm
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Explanation
Square side 14 ⇒ larger radius 28; smaller radius 12. Circumference = 2π×12 = 24π cm.