Question

find the length of an arc of a circle of radius 10 cm which sub tends an angle of 45degree at the centre​

Answer 1

• Arc length using degrees = 0/360° 2πr
• Arc length =45°/360° 2πr(10)
• =⅛.20π
• =5/2πcm = 7.9cm

Answer 2

Answer:

5π/2 cm

Step-by-step explanation:

so,

formula for length of an arc of circle

=

$\frac{\pi}{360} \times 2\pi \: r$

$\frac{45}{360} \times 2\pi \: \times \: 10cm$

$\frac{1}{8} \times 10\pi \: cm$

$\frac{5}{2} \pi \: cm$

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