The perimeter of rectangle is 40 m .its lengthis four m less than five times its breadth .find area of rectangle.
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LSA=26m²
=>2h(l+b)=26m²
=>h(l+b)=13m²
=>lh+bh=13m²..........................(2)
substitute (2) in (1)
=>lb+13=20m²
=>lb=7m²
area=lb=7m²
=>2h(l+b)=26m²
=>h(l+b)=13m²
=>lh+bh=13m²..........................(2)
substitute (2) in (1)
=>lb+13=20m²
=>lb=7m²
area=lb=7m²
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