Question

A pit 7 metre long and 2.5 m wide is dug to a certain depth. If the volume of the earth taken out of itis 28 m³, what is the depth of the pit?​

Answer 1

Answer:

1.6 m

Step-by-step explanation:

Length= 7 m

Width= 2.5 m

volume = 28 m³

=> length × width × depth = volume

=> 7 × 2.5 × depth = 28

=> depth = 28/(7×2.5)

∴ depth = 1.6 m

Answer 2

Step-by-step explanation:

length of the pit l= 7m

wide/breadth of the pit b=2.5m

let h be the depth of the pit

Then

volume of earth taken out = 28m^3

=>> h×l×b = 98

h×7×2.5 = 98

h× 17.5 = 98

h = 98÷17.5

h = 5.6m