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A cuboid has total surface area …

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A cuboid has total surface area of 40metre square and lateral surface area of 26metre square . find the base area

Posted by Amit Verma 6 years, 8 months ago

CBSE > Class 09 > Mathematics

1 answers

Vaishali Chaudhary 6 years, 8 months ago

TSA=40m² =>2(lb+bh+lh)=40m² =>lb+bh+lh=20m²..................(1) LSA=26m² =>2h(l+b)=26m² =>h(l+b)=13m² =>lh+bh=13m²..........................(2) substitute (2) in (1) =>lb+13=20m² =>lb=7m²

2Thank You

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CBSE > Class 09 > Mathematics