Question

a rectangular water tank is 120cm long and 60cm deep,if it contains 720litres of water what is the width of the water tank?

Answer 1

Answer:

The width of the water tank is 100cm.

Step-by-step explanation:

The volume of a rectangular tank with measurements; length $l$, width $w$, and depth $h$ is

$Volume =l\times w\times h$

Since the tank contains 720 liters of water, the volume of the tank is,

$720\times 1000 =720000 cm^3$

This is because $1 \ liter = 1000\ cm^3$.

Also, given that the tank is 120 cm long and 60 cm in depth. Substituting in the formula for volume, we get

$720000= 120\times 60\times w\\\\\implies720000= 7200w\\\\\implies w=\dfrac{720000}{7200}=100\ cm$

So the width of the water tank is 100cm.

Answer 2

Answer:

$\huge\rm\bold{Required\;Answer:-}$

let the length of the water tank be x cm.

volume of water that the water tank can hold

= 720 litres = (720×1000)cm3

volume of rectangular water tank

= length × breadth × height

=(x × 120 × 60) cm3

= l × 120 × 60 = 720 × 1000

=l × 120 × 60 = 720,000cm3

= length = 720,000/120 × 60

= length = 100cm

so,

the length of water tank is 100cm.

Step-by-step explanation:

Hope it's helpful to you :)