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Can 2 different size rectangles have the same area?
Yes. Two different size rectangles can have the same area. Take a 6x8 rectangle and a 4x12 rectangle. Both have an area of 48 square units. But wait ! Doesn't it all depend on what you mean by "size" ?? I suspect that a hardwood floor dealer or a carpet salesman would agree that a 4-by-12 room and a 6-by-8 room are both the same 'size'.
How many different rectangles can you make from 12 squares?
Assuming the 12 squares are the same size, three. And three more if you count different orientations (swapping length and breadth) as different rectangles.
Do all rectangles can be cut in half vertically or horizontally to make two smaller rectangles that are the same size and same shape?
Yes, they will be the same size and shape as each other.
Do concentric circles have the same area?
Concentric circles have the same center. They are not necessarily the same size. If two concentric circles have the same area, then they are congruent, meaning they coincide when superimposed.
What is a parallelogram that has the same shape but not the same size?
a parallelogram that has the same shape but not the same size called "similar". This means the angles are equal in both shapes but the sides are different.
