Subject
Quantitative Aptitude
Topic
Areas & Volumes
A lawn is in the shape of a rectangle of 80 m length and 50 m width.Outside the lawn there is a footpath of uniform 1 m width bordering the lawn.The area of the footpath is -
A lawn is in the shape of a rectangle of 80 m length and 50 m width.Outside the lawn there is a footpath of uniform 1 m width bordering the lawn.The area of the footpath is -
ক)
264 m2খ)
284 m2গ)
4000 m2ঘ)
4264 m2Explanation
(প্রশ্ন- একটি আয়তাকার চত্ত্বরের মাপ ৮০ মিটার × ৫০ মিটার।চত্ত্বরের বাইরে একটি হাঁটাপথ আছে সর্বত্র যার প্রশস্থতা ১ মিটার।তাহলে ঐ পথের ক্ষেত্রফল কত? হাঁটাপথ সহ চত্ত্বরের দৈর্ঘ্য =৮০+(১×২) =৮২ মিটার এবং প্রস্থ =৫০+(১×২) =৫২ মিটার অতএব হাঁটাপথ সহ চত্ত্বরের ক্ষেত্রফল =৮২×৫২=৪২৬৪ বর্গ মিটার হাঁটাপথ বাদে চত্ত্বরের ক্ষেত্রফল =৮০×৫০ =৪০০০ বর্গ মিটার অতএব হাটাপথের ক্ষেত্রফল =(৪২৬৪ - ৪০০০)=২৬৪ বর্গ মিটারRelated questions
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