Question

the radius of a sector is 16 cm and central angle is 45 degree find the length of an arc ( explain full form )​

Answer 1

Answer:

12.57 cm approx

Step-by-step explanation:

length of arc = x°/360 × 2πr

x° = angle of sector formed at centre

r = radius of circle

$= \frac{45}{360} \times 2 \times \frac{22}{7} \times 16 \\ = \frac{1}{8} \times 2 \times \frac{22}{7} \times 16 \\ = 2 \times \frac{22}{7} \times 2 \\ = 4 \times \frac{22}{7} \\ = \frac{88}{7} \\ = 12.57 \: approx$

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