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Area is the amount of square units in a 2-D shape, and perimeter is the distance around a shape
Square
The area of a shape is measured in square units
If you are given the area, A square units, then each side of the square is sqrt(A) units. And then the perimeter is 4*sqrt(A) units. The smaller square inside is irrelevant.
Depends what kind of shape, and Square units are just the sqaures that would fit inside the shape... if it is a circle you use this formula: Radious2 x pi If it is a rectangle: Basex Height pretty much... and if you need more help just go to Math.com or Math is fun.com or one of those!