Question

Find the area and circumferenes of circle whose radius is 12.6 cm​

Answer 1

Answer:

Heya...

Here is your answer --

Diameter = 12.6 cm

Radius = Diameter/2 (half)

Radius = 12.6/2

Radius = 6.3

Area of circle = π × r^2

Area = 22/7 × (6.3)^2

Area = 22/7 × 39.69

Area = 22 × 5.67 (39.79÷7)

Area = 124.74 cm^2

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Answer 2

The area is 498.96 cm² and circumference is 79.20 cm.

Step-by-step explanation:

The radius of the circle is, r = 12.6 cm.

Compute the area of the circle as follows:

$Area=\pi r^{2}$

        $=\frac{22}{7}\times (12.6)^{2}$

        $=498.96$

The area is 498.96 cm².

Compute the circumference of the circle as follows:

$C=2\pi r$

   $=2\times \frac{22}{7}\times 12.6$

   $=79.20$

The circumference is 79.20 cm.

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