Question

the circumference of circle is 125.6cm .find its radius and diameter

Answer 1

Answer:

Radius = 19 .98 cm

Diameter = 39.96 cm

Step-by-step explanation:

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Answer 2

Given:

The circumference of the circle = 125.6cm

To Find:

The radius of the circle

the diameter of the circle

Solution:

The radius of the circle is 20cm and the diameter is 40cm.

The circumference of a circle is the length of the boundary of the circle. If the radius of the circle is r, the by formula the circumference of this circle is 2πr.

The diameter is a line segment that passes through the center of the circle and joins two points on the circumference of the circle.

For a circle with radius r, diameter = 2r

According to the question,

2πr = 125.6 cm

Taking π = 3.14,

r = 125.6 / 2 X 3.14

= 125.6 / 6.28

= 20 cm

The diameter of this circle = 2 X 20

= 40 cm