Question

The open water tank with length 40 cm and width 30 cm hold 9.6 litres of water.Calculate the height of the water level in the tank and the total surface area of the tank in contact with the water. ​

Answer 1

Answer:

height=8cm

total surface area=3520$cm^{2}$

Step-by-step explanation:

1 liter= 1000cm

Therefore,

9.6 liters= 9600cm

∴amount of water tank takes=volume of tank...

9600=40×30×height

⇒9600=1200×height

⇒height=$\frac{9600}{1200}$

∴height=8cm(Ans)

SA=2lw+2lh+2hw

   ⇒(2×40×30)+(2×40×8)+(2×8×30)

   ⇒2400+640+480

   ⇒3520

∴SA=3520$cm^{2}$