The circumference of a circle is 176 cm. Find the area of a sector whose sectori angle is 45° The area of a sector ?
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Answer:
→ 2 × 22/7 × r = 176
→ 44/7 × r = 176
→ r = 176 × 7/44
→ r = 28
Radius = 28 cm
Therefore , area of the sector =
45/360 × 22/7 × 28²
= 1/8 × 22/7 × 28 × 28
= 308 cm²
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