Question

The dimensions of an oil tin are 26cm×26cm×45cm.Find the area of the tin sheet required for making 20 such tins.If 1 sq m of the tin sheet costs ₹10,find the cost of tin used for these 20 tins.​

Answer 1

Answer:

=> The cost of Rs. $120.64$

Step-by-step explanation:

Given that:-

For an oil tin:

Length = 26cm

Breadth = 26cm

Height = 45cm

To find:- The cost price = ?

Firstly, we will find the area of tin required for the sheet using the formula of the total surface area of the cuboid.

The total surface area of a cuboid $=2( length \times breadth + breadth \times height + length \times height )$

$=2[26 \times 26+26 \times 45+26 \times 45] \mathrm{cm}^{2}$

Therefore,

$=40[26 \times 26+26 \times 45+26 \times 45] \mathrm{cm}^{2}$

$=120640 \mathrm{~cm}^{2}$

Converting $\mathrm{cm}^{2}$ into $\mathrm{m}^{2} .$

$=\frac{120640}{100 \times 100} m^{2}$  

$=\frac{120640}{100 \times 100} \times 10$

$=\frac{12064}{100} \\=\text { Rs. } 120.64\end{array}$