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5 November, 22:34

2 Find the radius and diameter of a circle of area:

a) 6.16 cm²

b) 13.86 cm²

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Answers (1)
  1. 5 November, 22:47
    0
    A.

    Area = 6.16cm^2

    by using Formula,

    A=πr^2

    6.16=3.14*r^2

    r=1.4cm

    now,

    D=2*r

    =2*1.4

    =2.8 CM

    B

    A=13.86

    now,

    A=πr^2

    13.86=3.14*r*r

    4.41=r^2

    r=2.1

    D=2.1*2

    =4.2 cm
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