12. The circumference of a circle exceeds the diameter by 75 cm. Find the radius and diameter of the
circle.
13. A track is in the form of a ring whose inner and outer circumferences are 88 m and
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141
f the treal
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Answer:
let diameter be d
πd = d + 75
22/7d = d + 75
22/7d - d = 75
15/7d = 75
d = 35
diameter is 35 cm
radius is 17.5 cm
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