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The length of rectangle is 7 cm.
Step-by-step explanation:
Given,
Perimeter of rectangle = 44 cm
Length = l
Width = 2l + 1
Perimeter = 2(Length + Width)
Dividing both sides by 6
The length of rectangle is 7 cm.
Keywords: rectangle, perimeter
Learn more about rectangles at:
#LearnwithBrainly
We know that
the area of a rectangle=length*width
let
length=x-3
width=x+8
area=42 ft²
so
42=(x-3)*(x+8)----------> x²+8x-3x-24=42--------> x²+5x-66=0
using a graph tool-------> to resolve the second order equation
see the attached figure
the solution is
x=6
hence
length=x-3------> 6-3-----> 3 ft
width=x+8 ------> 6+8----> 14 ft
the answer is
<span>the dimensions of the rectangle are 3 ft x 14 ft</span>
the area of a rectangle=length*width
let
length=x-3
width=x+8
area=42 ft²
so
42=(x-3)*(x+8)----------> x²+8x-3x-24=42--------> x²+5x-66=0
using a graph tool-------> to resolve the second order equation
see the attached figure
the solution is
x=6
hence
length=x-3------> 6-3-----> 3 ft
width=x+8 ------> 6+8----> 14 ft
the answer is
<span>the dimensions of the rectangle are 3 ft x 14 ft</span>