Answer: A. 55°
Step-by-step explanation:
Answer:

mass = 3.645 g
volume = 9×9×9
= 729 cm³
density = 3.645/729
= 0.005 gcm^-3
Step-by-step explanation:
the volume is 729 cm³ cause the given height is 9cm and it is a cube. cube has equal sides so their lengths are the same.
volume = length × height × width
3d is the answer if I am wrong please let me know
If you do width times length you will get 30. Good luck