एक चाप 21 cm त्रिज्या वाले वृत्त के केंद्र पर 60° का कोण अंतरित करता है। π = 22/7 मानते हुए, इसकी लंबाई ज्ञात कीजिए।
A33 cm
B18 cm
C22 cm
D11 cm
Answer & Solution
Correct answer: C. 22 cm
वृत्त की कुल परिधि 132 cm है और 60° इसका 1/6 भाग है, अतः चाप की लंबाई = 132/6 = 22 cm।
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