If 0.13 × p2 = 13, then p is equal to?

Answer: Option A

$$\begin{array}{rl}& \text{0}\text{.13}\times {\text{p}}^2=13\\ & \Rightarrow {\text{p}}^2=\frac{13}{0.13}\\ & \Rightarrow {\text{p}}^2=\frac{13}{13}\times 100\\ & \Rightarrow {\text{p}}^2=100\\ & \Rightarrow \text{p}=10\end{array}$$