An open rectangle cistern is made of iron $2.5 c m$ thick. When measured from outsides. It is $1 m 25 c m$ long, $1 m 5 c m$ broad and $90 c m$ deep.
(i) the capacity of the cistern in liters

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Solution

Outer Dimensions $= 125$ cm, $105$ cm, $90$ cm
Inner Dimensions $= 120$ cm, $100$ cm, $85$ cm
Capacity $= l b h$
$= 120 \times 100 \times 85$
$= 1020000 c m^{3}$
$1 c m^{3} = 0.001$ ltr
$102000 c m^{3} = 1020$ ltr.

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An open rectangle cistern is made of iron 2.5 cm thick. When measured from outsides. It is 1 m 25 cm long, 1 m 5 cm broad and 90 cm deep.(i) the capacity of the cistern in liters

Outer Dimensions =125cm, 105cm, 90cmInner Dimensions=120cm, 100cm, 85cmCapacity =lbh=120×100×85=1020000cm31cm3=0.001 ltr102000cm3=1020 ltr.

An open rectangle cistern is made of iron $2.5 c m$ thick. When measured from outsides. It is $1 m 25 c m$ long, $1 m 5 c m$ broad and $90 c m$ deep.
(i) the capacity of the cistern in liters

Outer Dimensions $= 125$ cm, $105$ cm, $90$ cm
Inner Dimensions $= 120$ cm, $100$ cm, $85$ cm
Capacity $= l b h$
$= 120 \times 100 \times 85$
$= 1020000 c m^{3}$
$1 c m^{3} = 0.001$ ltr
$102000 c m^{3} = 1020$ ltr.