एक वृत्त की त्रिज्या 21 सेमी है वृत्त की परिधि ज्ञात कीजिए
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Answer:
वृत्त की तृज्या=21
वृत्त की परिधि= 2πr
2×22/7×21
2×66
132m
Step-by-step explanation:
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