Area of a Rectangle: Calculate The Missing Side based on the formula

The area of the rectangle below is equal to 55.

AC = 5.5

Calculate the length of side AB.

The area of the rectangle is equal to the length multiplied by the width.

Let's input the known data into the formula:

$S=AB\times AC$

$55=AB\times5.5$

Let's divide both sides by 5.5:

$AB=10$

10

The area of the rectangle below is equal to 44.

AC = 4

Calculate AB.

The area of the rectangle is equal to the length multiplied by the width.

Let's substitute the known data into the formula:

$S=AB\times AC$

$44=AB\times4$

Let's divide both sides by 4:

$AB=11$

11

The area of the rectangle below is equal to 84.

AC = 7

What is the length of side AB?

The area of the rectangle is equal to the length multiplied by the width.

Let's input the known data into the formula:

$S=AB\times AC$

$84=AB\times7$

Let's divide both sides by 7:

$AB=12$

12

Below is the rectangle ABCD, which has an area of 30 cm².

Side AB is equal to 5 cm.
What is the length of side BC?

First, we'll multiply side AB by side BC

We are given that side BC equals 5, therefore:

$AB\times BC=AB\times5$

We'll call side AB as X

And therefore:

$5x=30$

We'll divide both sides by 5 and get:

$x=6$

Therefore, $BC=6$

6 cm

The area of the rectangle below is equal to 24.

AC = 3

What is the length of side AB?

The area of the rectangle is equal to the length multiplied by the width.

Let's input the known data into the formula:

$S=AB\times AC$

$24=AB\times3$

Let's divide both sides by 3:

$AB=8$

8

The area of the rectangle below is equal to 63.

AC = 7

How long is side AB?

We use the formula to calculate a rectangle: length times width:

$AB\times AC=S$

We place the existing data into the formula:

$AB\times7=63$

$7AB=63$

We divide both sides by 7:

$AB=9$

9

The area of the rectangle below is equal to 27.

AC = 3

Calculate AB.

The area of the rectangle is equal to the length multiplied by the width.

Let's put the known data into the formula:

$S=AB\times AC$

$27=AB\times3$

Let's divide both sides by 3:

$AB=9$

9

The area of the rectangle below is equal to 50.

AC = 5

How long is side AB?

The area of the rectangle is equal to the length multiplied by the width.

Let's input the known data into the formula:

$S=AB\times AC$

$50=AB\times5$

Let's divide both sides by 5:

$AB=10$

10

The area of the rectangle is equal to 75.

AC = 7.5

Calculate AB.

The area of the rectangle is equal to the length multiplied by the width.

Let's input the known data into the formula:

$S=AB\times AC$

$75=AB\times7.5$

Let's divide both sides by 7.5:

$AB=10$

10

The area of the rectangle below is equal to 132.

AC = 8.5

Calculate length of side AB.

The area of the rectangle is equal to the length multiplied by the width.

Let's substitute the known data into the formula:

$S=AB\times AC$

$132=AB\times8.5$

Let's divide both sides by 8.5:

$AB=15$

15

Below is the rectangle ABCD.

It has an area of 42 cm² and side AD is equal to 12 cm.

What is the length of side DC?

Remember that to calculate the area of the rectangle, we multiply the length by the width.

Therefore:

$42=12\times CD$

$42=12CD$

Divide both sides by 12:

$3.5=CD$

3.5

The area of the rectangle below is equal to 15.

AC = 2.5

Calculate AB.

The area of the rectangle is equal to the length multiplied by the width.

Let's input the known data into the formula:

$S=AB\times AC$

$15=AB\times2.5$

Let's divide both sides by 2.5:

$AB=6$

6

The height of the house in the drawing is $12x+9$

its width $x+2y$

Given the ceiling height is half the height of the square section.

Express the area of the house shape in the drawing band x and and.

$3x^2+8xy+1\frac{1}{2}x+4y^2+3y$