Surface area is easy but hard. i will give you the formula and an example.
Formula: 2xlxw+2xlxh+2xhxw.
l= length
w= width
h= height
now say h= 4 in, l= 12 in and w= 3.5 in. now you would do lxw or 12x3.5. then multiply the product by 2. then do lxh or 12x4. now multiply by 2. finally, do hxw or 4x3.5. now add all your answers to get the final sum.
It depends on what you are looking for the surface area of. If it's a rectangular shape, it's length times width.
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To find the perimeter you add and to find the area we multiply.
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.
HOW TO FIND THE AREA OF A SQUAREmust x all sides
to find the surface area you have to first find the area of each part then add the areas together.
To find the area, use formulas to find the area of the smaller, regular shapes. Then add up all the smaller areas to find the area of the original shape.