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Mathematics

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work out the area of a circle with diameter 1.8cm. Take [tex]\pi[/tex] to be 3.142 and give your answer in 1 decimal place.

Answer :

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Area of a circle is pi x r ^2

R = diameter/2

R = 1.8/2 = 0.9

Area = 3.142 x 0.9^2

Area = 2.5 square cm.

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