Question

A leather box measuring 60 cm by 40 cm by 20 cm is to be covered with cloth.How many square cm of cloth is required for this purpose.find the cost of cloth at rs 80 per m^2

Answer 1

Step-by-step explanation:

cloth required = 2((60 * 40) + (40 * 20) + (20 * 60))

= 8800 cm²

cost = (80 * 8800)/10000

= 704000/10000

= Rs 70.4

Answer 2

8800  square cm of cloth is required for this purpose.

The cost of cloth is Rs.704000.

Step-by-step explanation:

Given : A leather box measuring 60 cm by 40 cm by 20 cm is to be covered with cloth.

To find : How many square cm of cloth is required for this purpose and find the cost of cloth at Rs.80 per m² ?

Solution :

The dimension of box is

l = 60 cm, b = 40 cm, h = 20 cm

Total surface area of box is give by,

$A= 2(lb+bh+lh)$

$A=2(60\times 40+40\times 20+60\times 20)$

$A=2(2400+800+1200)$

$A=2(4400)$

$A=8800\ m^2$

So, 8800  square cm of cloth is required for this purpose.

The cost of cloth at Rs.80 per m².

The cost is given by,

$C=8800\times 80$

$C=704000$

Therefore, the cost of cloth is Rs.704000

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