

InterviewSolution
Saved Bookmarks
1. |
The dimensions of an oil tin are 26 cm× 26 cm× 45 cm. Find the area of the tin sheet required for making 20 such tins. If 1 square metre of the tin sheet costs Rs. 10, find the cost of tin sheet used for these 20 tins. |
Answer» Given, Dimensions of oil tin are = 26 cm × 26 cm × 45 cm Then, Area of tin sheet required for making one oil tin = total surface area of oil tin = 2(lb x bh x hl) = 2(26 x 26 + 26 x 45 + 45 x 26) = 2(676 + 1170 + 1170) = 2 x 3016 = 6032 cm2 Area of tin sheet required for 20 oil tins = 20 x 6032 = 120640 cm2 = 12.064 m2 So, Cost of 1 m2 tin sheet = Rs. 10 ∴cost of 12.064 m2 tin sheet = 10 x 12.064 = Rs. 120.64 |
|