2748?? Your question is a little unclear
Happy studying ^_^
No it would be Pi *r *r because the r is to the power of 2
because the sides are the same and angle L = 58, that means that angle J is also 58, so LKJ would be 180-58-58 = 64 degrees
if JKM = 48, M = 90
so J = 180 -90 -48 = 42 degrees
Some points are (7,3) and (-7,-5).
72 divided by 6374 is equal to 0.0113
Hope it helps :)