Saved Bookmarks
| 1. |
The cost of putting a fence around a square field at Rs 2.50 per metre is Rs 200. The length of each side of the field is1. 80 m2. 40 m3. 20 m4. None of thesestep by step answer pls |
|
Answer» Answer: Answer: 20 m Step-by-step EXPLANATION: \BEGIN{gathered}\text{Total cost of fencing = Rs. 200}\\\\\text{Cost of fencing PER meter = Rs. 2.5}\\\\\therefore \: \text{Perimeter = Total cost $\div$ Cost per meter}\\\\= 200 \div 2.5\\\\= 80 \: m\\\\\text{Let the SIDE of the square be a. Then, Perimeter = 4a}\\\\\text{According to question,}\\\\4a = 80\\\\\implies a = 80 \div 4 = \boxed{20 \: m}\end{gathered} Total cost of fencing = Rs. 200 Cost of fencing per meter = Rs. 2.5 ∴Perimeter = Total cost ÷ Cost per meter =200÷2.5 =80m Let the side of the square be a. Then, Perimeter = 4a According to question, 4a=80 ⟹a=80÷4= 20m
|
|