Answer:
y = 5
Step-by-step explanation:
If AC is the perpendicular bisector of BD, that would mean that y+3=2y-2.
Now it's just simple algebra.
Solving for y, you get y=5.
Answer:

Step-by-step explanation:
Answer:
Step-by-step explanation:
1 surface area of the cube is s*s.
There are 6 faces on such a cube.
Area = 6*s^2 Divide by 6
Area/6 = 6s^2 / 6 Do the divsion
Area/6 = s^2
s = sqrt(area/6)
Answer:
240
Step-by-step explanation:
360-(60+60) = 240