Question

If tge radius of a circle is r units, then express the length of a diameter of the circle in terms of r​

Answer 1

GIVEN :

radius of a circle is = r units

TO DO :

express the length of a diameter of the circle in terms of r

FORMULA USED :

radius of circle = (diameter of circle )/ 2

SOLUTION :

We know radius of circle = (diameter of circle )/ 2

THEREFORE , According to the question :-

r = diameter of circle / 2

r × 2 = diameter of circle

2r = diameter of circle

ANSWER :

length of a diameter of the circle = 2r units

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More about circle :-

1. circumference of circle = 2πr

2. Area of circle = πr²

Answer 2

Step-by-step explanation:

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Radius of circle is twice of the diametre.

Radius =r given,

Hence, Diametre =2r

✒Formulas Related to Circles

✏Diameter of a Circle D = 2 × r

✏Circumference of a Circle C = 2 × π × r

✏Area of a Circle A = π × r²