The height, h, of a cylinder is 5 units less than 3 times its radius, r. which expression represents the height of the cylinder in terms of its radius

h = height

r = radius

 3r = 3 times it's radius

5 units less means subtract so

h=3r-5

3r-5  

Step-by-step explanation:

we know the height of the cylinder is five units less which means h= -5, three times the radius would be 3r. Piece it all together and your answer is 3r-5

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft