If the last one is supposed to be 7(8+3), it would be equivalent to 56+21
It is (c) NML
Because MN and ML is the vertex and the point meeting is M which is the angle.
The M is the angle because the common letter of both vertex is the letter M
A=bh
A=471.5(21.3)=10042.95cm2
I'm not for sure but I think that it would be the first option <span />