8. In the adjoining figure, the radius is 3.5 cm. Find the perimeter of the quarter of the
circle, correct to one decimal place.
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Given: radius, r= 3.5cm
Step-by-step explanation:
∵ Perimeter of arc =2πr × Ɵ/360°
=2 × 22/7 × 35/10 × 90°/360°
=22/7 × 1/4
=22/28
=11/14
=0.785cm
≈0.7cm(approx)
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