A closed wooden box $80 c m$ long, $65 c m$ wide and $45 c m$ high, is made of $2.5 c m$ thick wood. Find the capacity of the box and its weight if $100 {c m}^{3}$ of wood weighs $8 g .$

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Solution

$l^{'} = 80 - 2 (2.5) = 75$ cm
$b^{'} = 60$ cm
$h^{'} = 40$ cm
[Dimensions of inside of box]
$v = l^{'} b^{'} h^{'} = (75) (60) (40)$
$= 180000 c m^{3}$
$100 c m^{3} \to 8$ g
$180000 c m^{3} \to \frac{8}{100} \times 180000$
$= 14400$ g
Weight $= 14.4$ kg.

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A closed wooden box 80 cm long, 65 cm wide and 45 cm high, is made of 2.5 cm thick wood. Find the capacity of the box and its weight if 100 cm3 of wood weighs 8 g.

l′=80−2(2.5)=75cmb′=60cmh′=40cm[Dimensions of inside of box]v=l′b′h′=(75)(60)(40)=180000cm3100cm3→8g180000cm3→8100×180000=14400gWeight=14.4 kg.

A closed wooden box $80 c m$ long, $65 c m$ wide and $45 c m$ high, is made of $2.5 c m$ thick wood. Find the capacity of the box and its weight if $100 {c m}^{3}$ of wood weighs $8 g .$

$l^{'} = 80 - 2 (2.5) = 75$ cm
$b^{'} = 60$ cm
$h^{'} = 40$ cm
[Dimensions of inside of box]
$v = l^{'} b^{'} h^{'} = (75) (60) (40)$
$= 180000 c m^{3}$
$100 c m^{3} \to 8$ g
$180000 c m^{3} \to \frac{8}{100} \times 180000$
$= 14400$ g
Weight $= 14.4$ kg.