The diameter of a circle is $28 c m$ . Find its area.

616 c m^{2}

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516 c m^{2}

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116 c m^{2}

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216 c m^{2}

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Solution

The correct option is D $616 c m^{2}$
The diameter of a circle is $28 c m$
Therefore,
Radius of the circle= $\frac{28}{2} = 14 c m$
Therefore,
Area of the circle= $π (14)^{2}$

= $\frac{22}{7} \times 196$

= $616 c m^{2}$

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

The correct option is D 616cm2The diameter of a circle is 28cmTherefore,Radius of the circle=282=14cmTherefore,Area of the circle=π(14)2 =227×196 =616cm2

The diameter of a circle is $28 c m$ . Find its area.

The correct option is D $616 c m^{2}$
The diameter of a circle is $28 c m$
Therefore,
Radius of the circle= $\frac{28}{2} = 14 c m$
Therefore,
Area of the circle= $π (14)^{2}$

= $\frac{22}{7} \times 196$

= $616 c m^{2}$