Apply the cosine double angle identity to get:
Cos 2PI/3
Answer:
473
Step-by-step explanation:
The square surface area is 121 (11x11)
For the triangles, you do 16x11, which equals 176 and then divide by 2, to get 88. Since there are 4 triangles, I did 88x4 and got 352 and then added 121 to get 473
Answer:
h=10
Step-by-step explanation:
Answer:
m = 11/7
Step-by-step explanation:
m = y2-y1/x2-x1
m = 7-(-4)/2-(-5)
m = 7+4/2+5
m = 11/7
Perimeter means finding the total area of the outside of the triange (so the sum of all sides).
If you need further help, let me know!