Roberto wants to build a wooden box with a volume of 8 cubic feet. How many different boxes , all with whole number dimensions and a different size base, will have a volume of 8 cubic feet?

Three different boxes will have a volume of 8 cubic feet

Step-by-step explanation:

The formula for the volume of box = Length, l × Breadth, b × Height, h

Where, the base size = l × b

The number of different boxes are;

l × b × h

1 × 1 × 8

1 × 2 × 4

2 × 4 × 1

2 × 2 × 2

1 × 8 × 1

Whereby the base are to be different, we note that the following;

1 × 8 × 1 = 1 × 1 × 8

1 × 2 × 4 = 2 × 4 × 1

Hence the different boxes with different bases that will have a volume of 8 ft³ are;

h × b × l

1) 1 × 1 × 8

2) 1 × 2 × 4

3) 2 × 2 × 2

Which are three different boxes with dimensions;

Box 1: Length = 8 ft, breadth = 1 ft., and height = 1 ft

Box 2: Length = 4 ft, breadth = 2 ft., and height = 1 ft

Box 3: Length = 2 ft, breadth = 2 ft., and height = 2 ft.

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.