alleryA sector with central angle 90 degrees in a circle of radius 14 cm has area
A49 sq cm
B77 sq cm
C154 sq cm
D38.5 sq cm
Answer & Solution
Correct answer: C. 154 sq cm
1. Area = (90/360) × (22/7) × 14 × 14.
2. = (1/4) × (22/7) × 196 = (1/4) × 616 = 154 sq cm.
3. Hence 154 sq cm.
_Source: syllabus Mathematics, Ch 11 "Areas Related to Circles", §11.2_
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