alleryA rectangle 24 cm by 7 cm is inscribed in a circle. What is the radius of the circle?
A12.5 cm
B24 cm
C25 cm
D7 cm
Answer & Solution
Correct answer: A. 12.5 cm
The rectangle's diagonal subtends a right angle on the circle, so it is a diameter: √(24² + 7²) = 25 cm and the radius is 12.5 cm.
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