calculate the perimeter of a rectangle whose area is
7x²- 11x + 4.
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Answer:
16x - 10
Step-by-step explanation:
7x²-11x+4 is the area.
so, factorise it to find length and breadth.
7x²-11x+4
=7x²-7x-4x+4
=7x(x-1) - 4(x-1)
=(7x-4) (x-1)
hence, length = (7x-4)
breadth = ( x-1 )
perimeter of rectangle = 2 × (l+b)
= 2 × [ (7x-4) + (x-1) ]
= 2 × [ 8x-5 ]
= 16x-10
• perimeter of the rectangle is 16x-10
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