Find the
length of an arc if the radius of the circle is 20cm.
Solution
L = ∏r but r = 20cm
1800
L = ∏ x 20
1800
L = ∏ cm
9
Hence length of an arc is ∏/9 cm
TRY THIS……………….
Find the
length of an arc if the radius of the circle is 40cm.
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