Whats the area of the colored area

I'm a math wiz, so my dad says and I just want to see if you can solve this as easy as I can.

published on March 06, 20148 responses 0
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1/5

If one side of a square is 4in and the other is 7in, and another square inside of it is 2in by 4in what is area of the colored area?

20
28
16
2/5

If the perimeter of square is 84 what is the area?

3/5

What is 4/24 simplified?

I have no idea
1/4
1/6
4/5

4,786 in expanded form is....

10x4to the 4 power plus 10x7 cubed+10squared X 6
4 x 10 cubed+ 7 x 10 squared+ 8 x 10 to the first power+ 6 x 10 to the nothing (10 to the nothing=1)
English please
5/5

Have you been guessing these question's or actually doing the math?