Saturday, March 27, 2010

Circle P6 2009 SA2 P2 Rulang Q3

3. A piece of wire is bent to form two semicircles as shown below. Find the length of the wire used. (Take π = 3.14)

3.14 x 5 = 15.7

3.14 x 10 = 31.4

5 + 5 + 15.7 + 31.4 = 57.1 cm

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