It depends on what its asking for and what dimension it is. If its 2D, the area is lengthXwidth, and perimeter you would add all the side lengths. If its 3D, volume is lengthXwidthXheigth.
Please refer to the attachment for the answer and explanation. Hope it helps!!
Your answer would be if i'm correct
M^2-8m-7
If not that one
M^2+8m+7
The answer would be 20 degrees.
2*20
3*20
4*20
All triangles must three degrees that equals 180.
Answer:
3 cm
Step-by-step explanation: