Bihar Police Constable practice question
A rectangular ground has length 100 metres and breadth 240 metres. A path of uniform width 2 metres is to be paved along its diagonal at a cost of Rs. 45 per sq. metres. Taking the area of the path as (width × diagonal), find the total cost of paving the path.
From a Bihar Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
Tap an option to check your answer.
Show answer and explanation
Correct answer: (A) Rs. 23400
Diagonal, d = √(100²+240²) = 260 metres.
Area of path = width × diagonal = 2 × 260 = 520 sq. metres.
Total cost = Area × rate = 520 × 45 = Rs. 23400.
हिंदी में प्रश्न
एक आयताकार मैदान की लंबाई 100 मीटर और चौड़ाई 240 मीटर है। इसके विकर्ण के अनुदिश 2 मीटर चौड़ा एक रास्ता 45 रुपये प्रति वर्ग मीटर की दर से पक्का किया जाना है। रास्ते का क्षेत्रफल (चौड़ाई × विकर्ण) मानते हुए, रास्ता पक्का करने की कुल लागत ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) रु. 23400
विकर्ण, d = √(100²+240²) = 260 मीटर.
रास्ते का क्षेत्रफल = चौड़ाई × विकर्ण = 2 × 260 = 520 वर्ग मीटर.
कुल लागत = क्षेत्रफल × दर = 520 × 45 = रु. 23400.
More solved Quantitative Aptitude questions
- Sunita invests ₹2000 at 10% per annum compound interest, compounded annually. Find the amount after 3 years.
- 14 men can complete a work in 6 days. If 1 man does the work of 2 women, find the time taken by 6 women to complete the same work.
- The length of the transverse common tangent between two non-overlapping circles of radii 50 cm and 45 cm is 168 cm. Find the distance…
- Given a = 4 + √15, determine the value of a³ + 1/a³.
- A invests Rs. 15500 for 9 months and B invests Rs. 9500 for 6 months in a business. If the total profit is Rs. 17500, find A's share.
- If log (x − 2) = 3, then the value of x is: