Construction Math Free Test

To convert inches into feet you must divide by 12 because there are 12 inches for every foot, 274.%2 = 22.9; 22.9 ft.

The number of undamaged bricks is 133,145 -12 = 133. To find the percentage available, divide the number of available bricks
by the total number that were sent and multiply by 100 to get a percentage, 133/145 x 100 = 91.7%.

The customer has been overcharged by $7.80, so subtract this mistake from the total bill: $37.24-$7.80 = $29.44.

The volume of a cylinder is the area of the base, a circle, times its height. The diameter is 4 ft. so the radius is 4 ft./2 = 2 ft. The area of the base is pi times r(2), or approximately 3.14 x (2 ft) (2) = 12.56 sq.ft. The volume = area of base x height = 12.56 sq. ft. x 10 ft = 125.6 cu.ft.

Since each shelf can hold 9 cans, divide 126 by 9; 126/9 = 14.

In order to find out how many hours she worked, divide the total amount paid by the hourly wage, 90/15 = 6; 6 hours.

Since a post is needed for every four feet of fencing, divide the number of feet of fencing, f, by four to find the number of posts needed. The expression is f/4.

Divide the size of the walkway, 50 cubic feet, by the amount that each bag makes, 15 cubic feet; 50/15 =3.3. A little over 3 bags are needed to fill the walkway. Therefore, 4 bags need to be purchased.

Subtract the length of the shelf, 5.6 ft, from the total length of the wall, 12 ft, in order to find out how much extra wall space there is; 12 ft - 5.6 ft = 6.4 ft. Since the shelf has to be centered, the extra 6.4 ft. must be distributed evenly on either side; 6.4 ft/2 = 3.2 ft must be left on each side of the shelf.

There are 3.8 L per 1 gallon. To figure out how many liters Teresa will need for her mix, convert gallons to liters by multiplying 13 gal x 3.8 L/gal = 49.4 L.

The total surface area is 1,350 sq. cm. Find the surface area ofone side and then multiply by six because a cube has six equal
faces. The surface area of one side is 225,

15(2) = 15x 15 = 225, for a total of 1,350,6 x 225 = 1,350.

Find the smallest number of boxes for each part. 22 cans are needed and are sold in sets of 5, so 5 boxes are necessary, 5x5
provides 25 cans. 22 baffles are also needed and they are sold in sets of 8, so only 3 boxes are necessary, 3x8 provides 24
baffles. It is okay to have different amounts of each, as long as there are enough supplies for the job.

To find the total bill, add up the cost of the items for a total of $229.97, $12.56 +$141.08 + $76.33 = $229.97

100 x 8 (L x H) = 800 square feet x 14 (brick per square foot) = 11,200 (brick) / 200 (brick per hour) = 56 (hours of labor) x $42.50 (labor per hour) = $2,380.

To find out how many are left, subtract the original amount by the amount that was sold: 37 - 9 = 28.