Question

Find the area of a circle whose diameter is 4.2 cm

Answer 1

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Answer 2

Answer:

13.2²

Step-by-step explanation:

As ,

    AREA OF CIRCLE= $\pi$r² (r=radius,  $\pi$=22/7)

or  $\pi$d (d= diameter,  $\pi$=22/7)

= $\pi$d

=22/7 x 4.2

=13.2²

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