Mathematics
Medium
Question
The difference between the radi of the smaller circle and the bigger circle is 7cm and the difference between the area of two circles is 1078Sq.cm Radius of the smaller circle is_________?
A
17.5cm
B
21cm
C
28cm
D
None of these
✓ Official correct answer
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A
17.5cm
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B
21cm
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C
28cm
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D
None of these
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