Question

if $c = 18$, what is $sqrt{2c}$?

Explanation:

Step1: Substitute c=18 into the expression

$\sqrt{2c} = \sqrt{2\times18}$

Step2: Calculate the product inside the root

$\sqrt{2\times18} = \sqrt{36}$

Step3: Compute the square root

$\sqrt{36}=6$

Answer:

6