A rectangular box is 40 cm wide and 36 cm high. If the surface area of the box is 7440 square centimeters, find the length of the box.

The length of the rectangular box is 30 centimeters.

Step-by-step explanation:

Let suppose that rectangular box is closed. The rectangular box is represented by a parallelepiped, whose surface area (), measured in square centimeters, is defined by the following formula:

(1)

Where:

- Width, measured in centimeters.

- Height, measured in centimeters.

- Length, measured in centimeters.

If we know that , and , then the length of the rectangular box is:

The length of the rectangular box is 30 centimeters.

what graph

step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b