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# If the rectangle above has an area of 20 what is the length of side AB?

Updated: 12/15/2022

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Q: If the rectangle above has an area of 20 what is the length of side AB?
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### Formula for the area of a rectangle?

Length of a long side x length of a short side = area

### A rectangle has primeter 20mexpress the area of the rectangle as a function of the length of one of its side?

If the perimiter is 20 and one side is [[length]] then the other side is (10 - [[length]]). So the area is: [[length]] x (10 - [[length]]) square metres.

### What is the length of a side of a rectangle when the width is not given?

you divide the area by the length and you have the other side

### The perimeter of a rectangle is 36 and its area is 72 What is the length of the rectangle's longer side?

It is: 12 units in length

### What is the area of a parolellogram?

It is the same as for a rectangle, the length of the shorter side x the length of the longer side

### Can you find the perimeter if you know area of a rectangle?

You can find the perimeter of a rectangle if you know its area and the length of one side. Divide the area by the length of the known side and the quotient will be the length of a side perpendicular to the known side, and then multiply the sum of the two sides by two to find the perimeter.

### How do you find the area of a square if you know the area of the rectangle inside it?

Multiply the long side of the rectangle's length by itself.

### How do uou find the length of a rectangle?

If you know the length of one side - and the area... divide the area by the known side - to get the value of the unknown.

### What is the area of a rectangle 4.5m x 10m?

The area of a rectangle is the long side length multiplied by the short side length. In this case 10m x 4.5m = 45 square metres

The rectangle.

### What happens to the area of a rectangle if one side is doubled?

Area = length*width new Area = 2 * length * width Area is doubled

### How do you find the area of a cylander?

-- Slice it down one side and flatten it out. -- Now you have a rectangle. You only have to find the area of a rectangle. -- The area of a rectangle is (length) times (width). -- The length of the rectangle used to be the length of the cylinder. -- The width of the rectangle used to be the circumference of the cylinder's round ends, while it was still rolled up.