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melamori03 [73]
3 years ago
5

A rectangular tank 60 cm long and 50 cm wide is /5 full of water. When 24 liters of water are added, the water level rises to th

e brim of the tank. Find the height of the tank. (1 liter is 1000cm3 )
Mathematics
1 answer:
bija089 [108]3 years ago
8 0

Answer:

The tank is 10cm high

Step-by-step explanation:

Given

L=60cm -- length

W=60cm -- width

x = \frac{1}{5} --- water lever

Addition = 24L

Required

The height of the tank

Let y represents the remaining fraction before water is added.

So:

y + x = 1

Make y the subject

y = 1 - x

y = 1 - \frac{1}{5}

Solve

y = \frac{5 - 1}{5}

y = \frac{4}{5}

Represent the volume of the tank with v

So:

y * v = 24L

Make v the subject

v = \frac{24L}{y}

Substitute: y = \frac{4}{5}

v = \frac{24L}{4/5}

v = 30L

Represent the height of the tank with h;

So, the volume of the tank is:

v = lwh

Make h the subject

h = \frac{v}{lw}

Substitute values for v, l and w

h = \frac{30L}{60cm * 50cm}

Convert 30L to cm^3

h = \frac{30*1000cm^3}{60cm * 50cm}

h = \frac{30000cm^3}{3000cm^2}

h = 10cm

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