Question

the length of a rectangle is 6 m less than 3 times is Britain find the dimensions of the rectangle if its perimeter is 148

Answer 1

let the breadth be x
length = 3x - 6
perimeter =2(l+b)
148 = 2( x +3x-6)
74 = 4x - 6
80 = 4x
x = 20
breadth = 20
length = 54

Answer 2

Heya!
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◾Let the Breadth of the Rectangle = x units

◾Then Length of The Rectangle = (3x - 6 )

↪Perimeter of Rectangle = 2 × ( L + B )

↪Perimeter Given = 148 units

Now, Putting in values :
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148 = 2 × ( x + 3x - 6 )

148 / 2 = ( 4x - 6 )

4x - 6 = 74

4x = 74 + 6

4x = 80

x => 20 units
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◾Length => 3 (20) - 6 = 60 - 6

=> 54 units

◾Breadth => 20 units


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