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A cubical block of 7cm surmounted …

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A cubical block of 7cm surmounted by a hemisphere, find the total surface area of solid

Posted by Bhoomika Goyal 5 years, 5 months ago

CBSE > Class 10 > Mathematics

3 answers

Jatin Kumar 5 years, 5 months ago

TSA= 5a×a+CSA of hemisphere +a×a-22/7×7×7

Sonakshi Motte 5 years, 5 months ago

Srry above answer is incorrect Correct answer is: TSA of solid= 5a²+CSA of Hemisphere =5×7×7+2×22/7+7/2×7/2 =265+77 =342 cm²

Sonakshi Motte 5 years, 5 months ago

Apply formula of TSA of cube=6a² TSA of cubical block= 6×7×7=294 cm² That's all..

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