1.

Find the arc length of m CD =45 degree ; length of CD =_______ r = 8 cm and m XY = 45 degree ; length of XY =_______ r = 6 cm.

Answer»

(1) arc length (CD) = πrθ/180°

 = (22 x 8 x 45°)/180°

= 44 cm

(2) arc length (XY) = πrθ/180°

= (22 x 6 x 45°)/180°

= 33 cm



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