Question

please give me step explanation​

Answer 1

13 is the square root of number x. so, x = 13 * 13 = 169. Therefore, the number is 169. Now, 2x = 2(169) = 338.

Answer 2

$\sf\underline{Answer:}$

Option A - 338

$\sf\underline{Explanation:}$

Given square root of a number is 13, let that number be x

$\sqrt{x} = 13$

now let's square on both sides

${( \sqrt{x} )}^{2} = {13}^{2}$

$x = 169$

Required value is two times of x

$2x = 2 \times 169 = 338$

Therefore the answer is 338.

Have a good day!