a cuboidal room has total surface area of 500 m square and its lateral surface area is 200 m square find the area of its base
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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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