Farmer joe needs to put up new fence. his garden measures 15 feet by 9 feet. how much fence will he need to put up around his garden?

Answer is 48

Because 15+15=30
And 9+9=18
So 30+18=48

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .