Friday, 29 August 2014

LENGTH OF AN ARC - 1



Find the length of an arc if the radius of the circle is 20cm.

Solution

r = 20cm

L = ∏r
      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 30cm.

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