Approximation, bounds and percentage error

Rounding, estimation and percentage error

[Maximum mark: 6]$p=0.1847$ is an exact solution to a particular question.(a) Write down the exact value of $p$ in the form
$a\times10^k$, where $1\leq a\lt10,\ k\in\mathbb{Z}$[2](b) State the value of $p$ correct to 2 significant figures[1](c) Calculate the percentage error if $p$ is given correct
to 2 significant figures.[3]