A) \[\text{10 cm}\]
B) \[\text{14 cm}\]
C) \[\text{12 cm}\]
D) \[\text{16 cm}\]
Correct Answer: B
Solution :
[b] Perimeter \[=\frac{2\pi r}{2}+2r=\pi r+2r\] |
\[(\pi +2)r=36\] |
\[\left( \frac{36}{7} \right)-r=36\] |
\[r=7cm\] |
Hence, diameter \[=7\times 2=14\,cm\] |
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