Question

Find the radius of a circle whose circumference is 35 cm ( with shown solution)

Answer 1

As we can see the circumference of the circle is 22 cm

Circumference of a circle is given by 2πr.

Where r is the radius of the circle

Therefore 2πr is equal to 22….

Or radius 'r' is equal to 11/π

Now considering π is equal to 22/7…..

Then r is equal to 7/2

Now diameter is 2 times the radius…so the diameter is 7 cm…

Thank you

r≈5.57cm

Answer 2

$cirumference = 2\pi \: r \ \\ 35 = 2 \times \frac{22}{7} \times \: r \\ \\ 5 = 2 \times 22 \times \: r \\ \\ 5 = 44 \times \: r \\ 5 - 44 = \: r \\ \\ 39 = r \\ \\ \\ \\ \\ hope \: it \: helps \: u \: mate$