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The diameter of a circle is 28cm. Find its area.

  1. A
    616sq cm
  2. B
    308sq cm
  3. C
    154sq cm
  4. D
    77sq cm

Solution & Step-by-step Explanation

Given diameter (d) = 28cm.
Radius (r)=
2
d

=
2
28

=14cm
The formula for the area of a circle is:

Area=πr
2

Taking π≈
7
22

:

Area=
7
22

×14×14
Area=22×2×14
Area=44×14=616sq cm

Practice this question

Try it yourself before checking the explanation above.

The diameter of a circle is 28cm. Find its area.
A
616sq cm
B
308sq cm
C
154sq cm
D
77sq cm

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