Question

The square root of $245$ correct to two places of decimal is $\mathrm{15.65.}$

• A. True
• B. False

Answer 1

The correct option is A True

Let us rewrite $245$ as the product of its prime factors,

$\begin{array}{cc}245& =5\times 7\times 7\\ & =5\times 7^2\\ \sqrt{245}& =7\sqrt{5}\\ & =7\times 2.236\\ & =15.652\\ & \approx 15.65\end{array}$

Hence, the given statement is true.