Subject
Quantitative Aptitude
Topic
Areas & Volumes
The ratio of length and breadth of a rectangle is 3:2 respectively.The respective ratio of its perimeter and area is 5:9 .What is the breadth of the rectangle in metres?
The ratio of length and breadth of a rectangle is 3:2 respectively.The respective ratio of its perimeter and area is 5:9 .What is the breadth of the rectangle in metres?
ক)
6 mখ)
8 mগ)
9 mঘ)
13 mExplanation
(প্রশ্ন-একটি আয়তক্ষেত্রের দৈর্ঘ্য ও প্রস্থের অনুপাত ৩ঃ২। এর পরিসীমা ও ক্ষেত্রফলের অনুপাত ৫ঃ৯।আয়তক্ষেত্রের প্রস্থ কত মিটার?) ধরি,দৈর্ঘ্য 3x এবং প্রস্থ 2x তাহলে পরিসীমা =2(3x+2x)=2×5x=10x এবং ক্ষেত্রফল = 3x×2x=6x 2 প্রশ্নমতে, 10x:6x 2 =5:9 or,10/6x=5/9 or,6x×5 =10×9 x=(10×9)/(6×5) =3 অতএব প্রস্থ =2x=2×3=6 mRelated questions
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