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15 March, 21:38

Work out the circumference of a circle with radius of 7.5cm. Taki Pi to be 3.142

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  1. 15 March, 21:42
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    C = 47.1 cm

    Step-by-step explanation:

    Here C = 2*pi*r. Replacing pi with 3.142 and r with 7.2 cm, we get:

    C = 2 (3.142) (7.5 cm) = 47.13. Note that because r is given to 1 decimal place, your area should be expressed to 1 decimal place also: C = 47.1 cm
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