the tool used to find the width of a pencil is a ruler. But use the centimeter side of it for the width only!!
A tape measure, or a measuring pole.
To find the relationship in width and area you can use the formula area/length = width. To find the area of a room you multiple the length by the width.
What is a tool that scientists use to find patterns in their data
you need length and width length multiply width = area length + length + width + width = perimeter
millimetres
Use a ruler, to find out the area do width times length.
You would use meters.
scale
Balanced
A balance or scales.
centimeters
leanth times width