Solve the Problem $\sqrt{274} \mathrm{ft} \approx 16.6 \mathrm{ft}$ B) $\sqrt{22} \mathrm{ft} \approx 4.7 \mathrm{ft}$

Solve the problem. Give an exact answer and an approximation to the nearest tenth.
-The diagram below shows the side view of a plan for a slanted roof. Find the unknown length in this roof plan.

A) $\sqrt{274} \mathrm{ft} \approx 16.6 \mathrm{ft}$
B) $\sqrt{22} \mathrm{ft} \approx 4.7 \mathrm{ft}$
C) $\sqrt{274} \mathrm{ft}=137.0 \mathrm{ft}$
D) $\sqrt{64} \mathrm{ft} \approx 8.0 \mathrm{ft}$