जॉइन Examsbookउत्तर : 1. "288 sq.cm"
If a 36 cm thread is used to wrap a book, lengthwise twice and breadth wise once, what is the size of the book ?5
प्र: If a 36 cm thread is used to wrap a book, lengthwise twice and breadth wise once, what is the size of the book ?
- 1288 sq.cmtrue
- 2188 sq.cmfalse
- 3144 sq.cmfalse
- 4244 sq.cmfalse
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उत्तर : 1. "288 sq.cm"
व्याख्या :
Answer: A) 288 sq.cm Explanation: Length of the thread is 36 cms. length wise twice breath wise once then totally thrice.so 36/3 = 12.so length is 12 x 2 = 24 cmsbreath is 12 cmsArea of the book = length x breath = 24 x 12 = 288 sq.cm