ABC26GN1380 · Square Roots and Cube Roots

Subject: General Aptitude · Chapter: Square Roots and Cube Roots · Exam: · Marks: · Difficulty:

$\sqrt{\frac{.0196}{?}}=0.2$

(a)0.49

(b)0.7

(c)4.9

(d)None of these

Answer

Answer (as printed): A

Explanation

Let $\sqrt{\frac{.0196}{x}}=0.2$. Then, $\frac{.0196}{x}=0.04$ $$\Leftrightarrow \quad x=\frac{.0196}{.04}=\frac{1.96}{4}=.49 .$$

Explanation as extracted from the printed page; notation may be imperfect.