Can I have your help

3/5

Step-by-step explanation:

sin is opposite divided by the hypotenuse ( longest side)

18 is the opposite of angle x and the hypotenuse is 30

18/30 = 3/5

Volume = 1,157.625cm^3

Step-by-step explanation:

A cube means all sides (length, width, and height) are the same measurement. Since we are given one measurement (length = 10.5cm), all sides will be the same measurement.

Formula for volume:

Volume = length × width × height

v = l × w × h

v = 10.5cm × 10.5cm × 10.5cm

v = 110.25cm^2 × 10.5cm

v = 1,157.625cm^3

The unit will always be to the third power because the formula calls for multiplying the same unit (in this case, cm or Centimeters) three times. cm × cm × cm = cm^3