4.) The average area of a living room in the United States is 330 square feet. If the living room is in the shape of a square, what are the
approximate dimensions of the room?
Be able to solve the problem without a calculator and explain your
solution.

82.5

Step-by-step explanation:

330/4=82.5

there are 4 sides to a square and they are even this means that you need to divide it by 4 to get the dimensions.  If you multiply 82.5 by itself it will equal 330 meaning that is the answer.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,