In the circle above, with centre O and radius 7 cm. ...
In the circle above, with centre O and radius 7 cm. Find the length of the arc AB, when < AOB = 57°
5.32 cm
4.39 cm
7.33 cm
6.97 cm
Correct answer is D
Length of arc = \frac{\theta}{360°} \times 2 \pi r
= \frac{57}{360} \times 2 \times \frac{22}{7} \times 7
= 6.97 cm
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