Saved Bookmarks
| 1. |
A cuboidal oil tin is 30 cm by 40 cm by 50 cm. Find the cost of tin required for making 20 such tins If the cost of Tin rerequired @ rupees 20 |
|
Answer» on of CUBOIDAL tin = 30cm×40cm×50cmlet length = 40cmbreath = 30cmheight = 50cmTotal SURFACE area = 2(lb+bh+lh) = 2(40×30 + 30×50 + 40×50) = 2(1200 + 1500 + 2000) = 2(4700) = 9400 cm²TSA of one tin box = 9400 cm²TSA of 20 tin BOXES = 9400×20 = 18800 cm² = 1.88m²Cost of tin = Rs. 20/m²Total cost = 1.88×20 =Rs. 37.60 |
|