Question

The Diameter of a circle is 12 units less than 3 times its radius. Find the length of its radius​

Answer 1

Answer:

First you need to find the radius, the key term to find the radius is diameter=2⋅radius ; therefore the radius r is 122=6 inches.

Step-by-step explanation:

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Answer 2

Answer:

The length of the radius of the given circle is $12$ units

Explanation:

The radius of a circle is the distance of the center point to any point lying on the circle, represented by the symbol r. Its unit measurement is of length or distance like cm, m, km, etc.

The diameter of a circle is a line that passes through the center point of a circle and meets opposite points that lie on the circle, the two opposite points lie anywhere on the circle, so there is an infinite number of diameters in a circle. It is represented by the symbol d. The measure of the diameter is two times the radius. Its unit of measurement is the same as that of radius i.e. of length or distance like cm, m, km, etc.

Step-by-step explanation:

Step-1:

We are given in the question, the diameter of a circle is 12 units less than 3 times its radius, converting the statement into an equation, we get

Step-2:

$d=3r-12\\2r=3r-12\\ r=12$

Hence, the length of the radius is $12$ units.

The radius of a circle:

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The Diameter of a circle:

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