a single$-$turn current loop, carrying a current of $3\mathrm{.}75$ A$,$ is in the shape of a right triangle with sides $71\mathrm{.}2,138,$ and $155$ cm$.$ The loop is in a uniform magnetic field of magnitude $90\mathrm{.}9$ mT whose direction is parallel to the current in the $155$ cm side of the loop.