Respuesta :
Answer: Let L be the length, w be the width and p be the perimeter of the rectangle.
p = 2L + 2w, A = Lw
p/2 = L + w
w = p/2 - L
Since A = Lw:
A = L(p/2 - L)
A = Lp/2 - L^2
Hope this helps :)
Explanation:
Hope this helps!
To find perimeter of rectangle, the formula will be:-
2 X Length + Breadth
Example -
Example - Length= 4 cm
Example - Length= 4 cmBreadth= 3 cm
Example - Length= 4 cmBreadth= 3 cmPerimeter= 2 X 4+3 cm
Example - Length= 4 cmBreadth= 3 cmPerimeter= 2 X 4+3 cm2 X 7
Example - Length= 4 cmBreadth= 3 cmPerimeter= 2 X 4+3 cm2 X 714 cm
To find area of a rectangle, the formula will be:-
L X B
Example -
Example - Length= 2 cm
Example - Length= 2 cmBreadth= 7 cm
Example - Length= 2 cmBreadth= 7 cmArea= 2 X 7 cm
Example - Length= 2 cmBreadth= 7 cmArea= 2 X 7 cm14 sq. cm
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