Find the area of the rectangle if the perimeter is
52 cm.
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Answered by
10
Step-by-step explanation:
perimeter=2×(l+b)
=> 52=2{(2x+3)+(3x-1)}
=> 52=2(5x+2)
=> 26=5x+2
=> 24=5x
=> x=24/5
=> x=4.8
area=l×b
={2(4.8)+3}×{3(4.8)-1}
=12.6×15.4
=194.04
Answered by
3
Answer:
2(2x+3)(3x-1) = 52
(4x + 6)(3x-1) = 52
12x^2 - 4x + 18x - 6 = 52
12x^2 + 14x - 58 = 0
6x^2 + 7x - 29 = 0
6x^2 + 36x - 29x - 29 = 0
6x(x+6) - 29(x+1) = 0
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