The circular ring has an inner radius of 2 and outer radius of 5.
An object similar to the circular ring shown is

A. a circle of radius 5.
B. another circular ring with inner radius 4 and outer radius 7.
C. another circular ring with inner radius 5 and outer radius 12.5.
D. a circle of radius 2.
E. none of these


Answer: C

Mathematics

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