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Q: Is every rectangle a square using counterexample?

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Using Pythagoras: 322+362 = 2320 and the square root of this is the length of the diagonal

1x5 2x4 3x3 a square, but a square IS a special type of rectangle, Also 4x2 and 5x1 which are the first two rotated through 90 degrees. Whether these should be considered the same or different depends on the context of the question.

The new dimensions are 4cm and 7cm

The area ,A, of a rectangle is the length, L, multiplied by the width, W. A=LW hence W=A/L. The perimeter, P, of a rectangle is P= 2(L+W) or 2L+2W. 2W=P-2L and W=(P/2)-L. The Square of the diagonal of a rectangle, D^2 =W^2+L^2 so that W^2=D^2-L^2 and W=sqrt((D^2-L^2). You could also express the width using trigonometric functions, but this is probably enough to get you started.

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by using your brain

A rectangle is a shape which has all inner angles equal to 90 degrees. A square is A RECTANGLE that has all sides of the same size. Therefore, using informatical slang, SQUARE INHERITS RECTANGLE.

Cut off part of it

The answer depends on what your criterion for deciding what is "largest". Any rectangle will have an area of 47916 square feet. Its perimeter can be infinitely large.

Not really. All 4 sides of a rectangle are not the same (unless it is a square)

In terms of area a square of side 12.5 mtrs.

By using that one thing.

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Using Pythagoras the length of the diagonal in the rectangle is the square root of 149 or just over 12 cm

N0- you can't use one square.

One thing that can be calculated using a Square Footage Calculator is the Length and Width of a Rectangle, Circle, Square or Triangle. This comes in handy for calculating room sizes.

The two triangles would make either a square or a rectangle.

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