For the second one 1 mph equals 1.6 km so i’m pretty sure it would be all of them
<u>Answer-</u>
<em>The area of QRS is </em><em>238.7</em><em> sq units.</em>
<u>Solution-</u>
According to properties of supplementary angles,

So,

As the sum of measurement of all the angles in a triangle is 180, so



Then the area of the triangle will be,



Hi there, please give me the brandies the answer if I helped. The photo is attached below.