alleryત્રિજ્યાનો ગોળાકાર સેક્ટર 21 cm પરિમિતિ 86 cm ધરાવે છે. તેનો વિસ્તાર શોધો; π = 22/7 નો ઉપયોગ કરો.
A462 cm²
B231 cm²
C693 cm²
D924 cm²
Answer & Solution
Correct answer: A. 462 cm²
આર્ક 86−2×21 = 44 cm છે, કોણ 44/132×360° =120° આપે છે;
વિસ્તાર 120/360×(22/7)×21² = 462 cm² છે.
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