Rectangle perimeter

Calculate the perimeter of a rectangle with the length of one side 69 cm and the length of the other 49 cm

The perimeter is cm

Remember !

The rectangle is the parallelogram with a right angle. Properties:

– the opposite sides are congruent

– all the angles are right

– the diagonals are congruent

– the perpendicular bisectors represent the symmetry axis

Perimeter of a rectangle formula : P = 2 • ( L + l )

How to calculate the area of a rectangle : A = l • L

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