Write given statement using numbers,literals and sign of basic operations.State what each letter represents.
Diameter of a circle is twice its radius

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Solution

Step 1 : Defining the variables
Let Diameter of a circle be $D$
Let Radius of a circle be $r$
Step 2 : Finding Algebraic Expression
Twice the radius = $2 r$
Diameter of a circle is twice its radius
$\Rightarrow D = 2 r$
Hence, answer is $D = 2 r$

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