How many cubic centimetres of iron is required to construct an open box whose external dimensions are $36 c m, 25 c m$ and $16.5 c m$ provided the thickness of the iron is $1.5 c m$ .

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Solution

External dimensions of Open Box are :
$L = 36 c m, B = 25 c m, H = 16.5 c m$

External Volume of open Box $= L B H = 14, 850 c m^{3}$

Thickness of box $= 1.5 c m$

internal dimensions of Box are :
$l = 36 - 2 \times 1.5 = 33 c m$

$b = 25 - 2 \times 1.5 = 22 c m$
$h = 16.5 - 1.5 = 15 c m$

Internal Volume of open Box $= l b h = 10890 c m^{3}$

Volume of Iron required = External volume - Internal Volume $= 14, 850 - 10890 = 3960 c m^{3}$

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How many cubic centimetres of iron is required to construct an open box whose external dimensions are 36 cm, 25 cm and 16.5 cm provided the thickness of the iron is 1.5 cm. If one cubic cm of iron weighs 7.5 g, find the weight of the box.

How many cubic centimetres of iron are there in an open box whose external dimensions are 36 cm, 25 cm and 16.5 cm, the iron being 1.5 cm thick throughout? If 1 cubic cm of iron weighs 15 g, find the weight of the empty box in kg.

Q. How many cubic centimetres of iron is required to construct an open box whose external dimensions are

36

cm,

25

cm and

16.5

cm provided the thickness of the iron is

1.5

cm.

$How many cubic centimetres of iron are there in an open box whose external dimensions are 36 cm,25,cm and 16.5 cm,the iron being 1.5 cm thick throughout? If 1 c m^{3} of iron weighs 15 g, find the weight of the empty box in kilograms .$

Find the volume of iron required to make an open box whose external dimensions are $36 c m \times 25 c m \times 16.5 c m$ , the box being $1.5 c m$ thick throughout. If $1 c m^{3}$ of iron weighs $8.5$ grams, find the weight of the empty box in kilograms.

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How many cubic centimetres of iron is required to construct an open box whose external dimensions are 36cm,25cm and 16.5cm provided the thickness of the iron is 1.5cm.

How many cubic centimetres of iron is required to construct an open box whose external dimensions are $36 c m, 25 c m$ and $16.5 c m$ provided the thickness of the iron is $1.5 c m$ .