Question

A rectangular water tank is 120cm wide and 6 cm deep if it contains 720 litres of water what is the length of the water tank

Answer 1

Given:-

In rectangular water tank,

• Width = 120cm
• Depth = 6cm
• Volume = 720l

To find:-

• Length of the rectangular water tank

Explanation:-

Here we are given width, depth and volume of the rectangular water tank. We will first change the volume from litre to cm³ and then using formula of volume of the rectangular water tank we will find length of the water tank.

Solution:-

–›» Change from litre to cubic centimetre

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ = 720 l

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀= 720 × 1000

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ ⠀⠀⠀ = 720000 cm³

★ Volume of the rectangular water tank = length × breadth × height

⠀—›» 720000 = l × 120 × 6

⠀—›» 720000 = l × 720

⠀—›» l = 720000 / 720

⠀—›» l = 1000cm

Hence, the required answer is 1000cm.

Answer 2

breadth= 120cm

height= 6cm

volume= 720l

change in m³= 720 ×1000

length of water tank= 720× 1000÷ 120 × 6

. = 1000cm

. = 10m