We can draw the following picture:
where we can see that triangle PSR is a right one. Then, we can apply Pytagorean theorem to find PR:
[tex](2.6)^2+4^2=PR^2[/tex]
then, PR is given by
[tex]PR=\sqrt[]{(2.6)^2+4^2}[/tex]
which gives
[tex]\begin{gathered} PR=\sqrt[]{6.76+16} \\ PR=\sqrt[]{22.76} \end{gathered}[/tex]
therefore, PR is equal to 4.77 m. By rounding up to the nearest whole number, the answer is PR= 5 m.
