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Two concentric circles form a ring. The ...

Two concentric circles form a ring. The inner and outer circumference of the ring are 22 cm and 44 cm respectively. The width of the ring is:
दो संकेंद्रित वत्त एक वलय का निर्माण करते हैं। वलय की आंतरिक और बाहरी परिधि क्रमशः 22 सेमी और 44 सेमी है। वलय की चोड़ाई ज्ञात करें।

A

3.5 cm

B

1.5 cm

C

2.5 cm

D

3 cm

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