Question

circumference of a circle is 200 cm find its radius and diameter....with (2πr) this formula​

Answer 1

GIVEN

Circumference of a circle = 200 cm

TO FIND

Radius and diameter of the circle

FORMULA

Circumference of circle = 2 × 22/7 × r

Diameter of a circle = R × 2

SOLUTION

= 2 × 22 / 7 × r = 200

= 44 / 7 × r = 200

= 44 × r = 200 × 7

= r = 200 × 7 ÷ 44

= r = 31.81

So, the radius of circle is = 31.81 cm

we know that, the diameter of circle is always double from its radius. So,

= 31.81 × 2 = 63.62 cm

So, the diameter of circle is 63.62 cm

✵ Hope it helps ✵