Please review your questions before posting them. Your spelling makes it necessary for the reader to try to guess what you mean.
If you meant that the perimeter (not permitter) of a square is 12 units, then the length of one side (not silence) of the rectangle is (12 units)/4 = 3 units.
M = mass
p = density
v = volume
Yes, to find m it would be m = pv.
To find v that would be m/p.
Answer:
x = 4
Step-by-step explanation:
12x + 5 = 4x + 37, first subtract both sides by 5 and subtract both sides by 4x
8x = 32, next divide 8 from both sides
x = 4