Cuboid C is 4 and 4. Cuboid D is 2 and 4.
The answer is C. 90 degrees.
This is because angle R is one of the four angles of a square.
I hope this helps.
The answer for this equation is x < 1
Answer:

Step-by-step explanation:
17/20
Multiply by the conjugate 5/5.
(17 × 5)/(20 × 5)
85/100
Apply rule : a/100 = a%
85/100 = 85%
91.125 all you need to do is cube 4.5 or multiply 4.5 by itself 3 times so 4.5x4.5x4.5