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Find the area of a circle when radius =5cm .

Answer
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Hint: In the question we are asked to find the area of a circle with given radius. For this we must know the formula of circle i.e. A=πr2 . The formula is simple and only needs the radius of the circle to find its area.

Complete step-by-step answer:
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Here, to find the area of the circle, we must know the formula of the circle. The formula to find the area of a circle is A=πr2 .
Where, A is the area of the circle,
π is the constant ratio of circumference of a circle,
‘r’ is the variable representing the radius of the circle which is the distance from the centre outward.
From the question, we know that –
r=5cm
Here, we will substitute the value of radius in the formula of area of the square.
A=πr2A=227×(5)2 (π=227)A=227×(5×5)A=227×(25)A=5507A=78.57cm2
Hence, the area of the circle with the radius 5cm is 78.57cm2

Note: Area of a circle is the region occupied by the circle in a two dimensional plane. It can be determined easily using a formula, A=πr2. In the solution, we can also use the value of π as 3.14. This area formula is useful for measuring the space occupied by a circular field or a plot. Suppose, if you have the plot to fence it, then the area formula will help you to check how much fencing is required.

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