The travelers are adding a new room to their house. the room will be a cube with volume 3375 ft.³.they are going to put in hardwood floors, the contractor charges $10 per square foot. how much will the hardwood floors cost?

$ 2250

Step-by-step explanation:

3375 = s³

s = ∛3375

s = 15 ft.

floor area = s² = (15 * 15)

floor area = 225 ft²

the contractor charges $10 per ft².

therefore,  

the hardwood cost = 225  x  $10 = $2250

$2,250.

Step-by-step explanation:

So first, we need to find the area of the floor (the side shaded green). To do so, we first need to find the length of the one side of the room.

Since we know that the room is a cube, all side lengths are equivalent. And since we are given that the volume of the room is 3375, we can find the length of the side.

The volume of a cube is given by the formula:

Substitute 3375 for V:

Take the cube root of both sides:

So, the side length of the room is 15.

This means that the area of the floor is:

They charge $10 per square foot. There are 225 square feet. Thus, the total cost will be:

$2,250.

11.

There are 14 pies in total. In each pie there are slices and 1/8 is one slice of each pie. This means 8/8 is a full pie ; 8/8=100% . From this we conclude that there are 8 pieces in one pie.

To find how many pieces there are in total we multiply the total amount of pies and the number of pieces in each: 14 * 8 = 112 pieces

12.

4/8 , 1/4 , 1/2

We look at any fractions that can be simplified and 4/8 can be,

4/8 ; we divide both numbers by "2" and get 2/4 , we can do this again and get 1/2.

Now we have 1/2 ,1/4,1/2 .

To add fractions you must always have a common denominator ;

2/4 + 1/4 +2/4 ; because I see that 4 is the largest denominator out of the three fractions and i multiply the numerators by the number of times i multiplied the denominators for the others to get 4.

2/4 +1/4+2/4 ; you just add the numerators and get ; 5/4