Question

the area of a circle is 98,56 cm² find its circleference​

Answer 1

$\sf{ \color{maroon}{Question -:}}$

✎ The area of a circle is 98,56 cm² find its circumference.

$\sf{ \color{maroon}{Answer-:}}$

✎ Let the radius of the circle be R.

Now, Area = 98.56 cm².

${πr2 = 98.56}$

Put π = 22/7

r²= 98.56/22/7 = 31/36

r=5.6

Circumference of circle =2×π×5.6=35.2 cm

Answer 2

Step-by-step explanation:

$\sf{ \color{maroon}{question:}}$

• The area of a circle is 98,56 cm² find its circumference.

$\sf{ \color{maroon}{correct \: solution: }}$

Let the radius of the circle be R.

Now, Area = 98.56 cm².

${πr2 = 98.56}$

Put π = $\frac{22}{7}$

r²= $\frac{ \frac{98.56}{22} }{7}$

$= \frac{31}{36}$

$r = 5.6$

Circumference of circle = $2\pi \: r \: =$

$2 \times \frac{22}{7} \times 5.6$

$= 35.2 \: cm$

Hence, the circumference of the circle is 35.2cm

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