Question

which part of the circle is important for making a wheel ? ( {a}centre , {b}radius ,{c} chord ,{d} length )​

Answer 1

SOLUTION

TO CHOOSE THE CORRECT OPTION

The part of the circle is important for making a wheel

a. centre

b. radius

c. chord

d. length

CONCEPT TO BE IMPLEMENTED

CIRCLE

A circle is the locus of a point which moves in a plane so that its distance from a fixed point is always constant.

CENTRE OF THE CIRCLE

The fixed point is called centre of the circle

RADIUS OF THE CIRCLE

The fixed distance is called the radius of the circle

So radius if defined as the distance between centre and any point on the circle

GENERAL EQUATION OF A CIRCLE

The general equation of a circle is

$\sf{ {(x - h)}^{2} + {(y - k)}^{2} = {r}^{2} \: \: }$

where (h, k) is the centre of the circle and r is the radius of the circle

EVALUATION

From above we can conclude that for making a wheel radius is important

Hence the part of the circle is important for making a wheel

b. Radius

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Answer 2

The radius is the most important part of the circle for making a wheel.

• The radius of the circle is the measure of the distance from the center of the circle to its circumference.
• If one does not knows the radius of the circle, he/she cannot form the wheel.
• The chord and length do not play any role in making the wheel.
• A wheel would have only one center which will be joined by the radius up to the circumference.
• The size of a wheel is differentiated by its radius alone therefore radius is the most important part.