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10 June, 17:26

The area of a circle is 77.28m2.

Find the length of the diameter rounded to 1 DP.

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  1. 10 June, 20:12
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    Answer:diameter=9.92m

    Step-by-step explanation:

    Area=77.28

    π=3.14

    Area=π x (d/2) ^2

    77.28=3.14 x (d/2) ^2

    Divide both sides by 3.14

    77.28/3.14 = (3.14x (d/2) ^2) / 3.14

    24.6 = (d/2) ^2

    Take them square root of both sides we get

    d/2=√ (24.6)

    d/2=4.96

    d=4.96 x 2

    d=9.92
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