Mathematics

Question

Calculate the area of a circle with a diameter of 6cm

2 Answer

  • Area of circle = πd²/4,    where d = diameter
     
                          = π*6*6/4 = 9π ≈ 9 *3.1416 ≈ 28.2744 cm²

    Area ≈ 28.27 cm²

    Hope this explains it.

  • A≈28.27cm² is the area of the circle with diameter 6cm
    as
     Area of a circle = pi * r² 

    Since the diameter is twice the radius, the radius is 6cm/2 which is 3cm. 

    pi * 3 * 3 

    = 28.2743339cm²

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