Answer:
80°
Explanation:
All angles inside a triangle must add up to 180°
Answer: 19.5
Step-by-step explanation:
Use Pythagorean theorem to find the diagonal as it is a right triangle.
12x+7x+8y+12^2+y+12=19x+9y+24^2
Answer: 24, 44, and 66
Step-by-step explanation:
Check all of the possible combinations of the faces:
6 × 4 = 24
11 × 4 = 44
11 × 6 = 66
So the answers are 24, 44, and 66