For example: 20*20 = 400 and there are many more
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Yes 400 is a multiple of 4 as 100 x 4 = 400
4, 16, 64, 144, 256, 400, 576, 784, 1024, 1296, 1600, etc.
Any multiple of 20 that is greater than 400. If the multiple is 400 or fewer then the length of the rectangle will be less than (or equal to) its width which contradicts the definition of the length as the longer side of a rectangle.
When you want to calculate a percent, you take the first number divided by the "of number."For this, it is 400/640=0.625Then you take the answer and multiple it by 100, moving the decimal to the right 2 digits to get the percent.0.625*100=62.5%Recommend please! :D
Any multiple of 100, like 200, 300, 400, 500, 9700, etc.