Saved Bookmarks
| 1. |
a rectangle lawn 80 m * 60 m has two roads each 10 m wide running in the middle of it. one is parallel to the length and the other is parallel to the breath. find the cost of levelling them at 30 paise per sq. m.? |
|
Answer» Answer: Answer REF.Image The COST of gravelling them at Rs. 1.20 per square meter = Rs . 1560 To find the area of roads : It is given that a rectangular LAWN 80 m × 60 m has two roads each 10 m WIDE running in the middle of it. Dimension of two roads are 80×10 and 60×10 Area of two roads = 80×10+60×10−10×10 =800+600−100 = 1300 sq. meter To find the cost for gravelling It is given that The cost of gravelling the at Rs. 1.20 per sq. meter. Therefore total cost = total area × cost per sq. meter =1300×1.20 =Rs.1560 ∴ The cost of gravelling them at Rs. 1.20 per sq. meter = Rs. 1560 solution |
|