Question

an open rectangular tank when measured from outside is to 25 cm long to 12 cm wide and 110 CM deep. it is made up of iron which is 3.5 CM thick find the capacity of the tank.(please anyone give me answer it's urgent)​

Answer 1

you have to deduct the iron tickness to calculate the volume

so effective length will be

$l \: = 25 - 2 \times 3.5 = 18 \: cm \\ b = 12 - 2 \times 3.5 = 5 \: cm \\ h = 110 - 3.5 = 106.5 \: cm \\ \\ so \: volume \: is \\ v \: = l \times b \times h = \\ = 18 \times 5 \times 106.5 \\ = 9585 \: {cm}^{3}$

9585 cm3