Find the height of the given pyramid.

7m

Step-by-step explanation:

The volume of a pyramid is given by the following formula: 1/3bh. Where 'b' represents the area of the base and 'h' the height of the pyramid.

The area of the base is: b = (3m)(4m) = 12m^2

Now, we know that the volume is 28m^3, then:

28m^3 = (1/3)(12m^2)(h)

Solving for 'h':

h = 7m

correct answers below:

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons