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sozzie ppl last 1 x help x

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osman123 | 12:29 Sat 10th Jan 2009 | Quizzes & Puzzles
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if the diameter was 14.8 what will the cicumferance and are be ?
help coz i really dont get it =) xxxx
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You need to learn the formula -
C = pi x diameter or c = 2 x pi x radius
area = pi x radius x radius
C = pi (3.142 ) x 14.8 = 46.5 cm
Area = 3.142 x 7.4 x 7.4 = 172.1 cm squared
If you are given the diameter then halve it for the radius.
Any help???

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