Question

The dimensiom of a field are 15m by 12 m. A pit 7.5 m long,6m wide and 1.5m deep is dug at one corner of the field . The earth removed is evenly spread over the remaining area of the field . Calculate the rise in the level of the field.

Answer 1

Answer:

Step-by-step explanation:

Given : Dimension of the field = 15 m × 12 m

Dimension of the pit = 8 m × 2.5m × 2m

Volume of earth removed from the pit = 8m × 2.5 m × 2 m = 40 m3

Area of the remaining field

= Area of the field – Area of the pit

= 15 m × 12 m – 8 m × 2.5 m

= 160 m2

Since, the earth removed is evenly spread over the remaining area of the field.

∴ Increase in level of remaining field × Area of remaining field  = Volume of earth removed from the pit

Increase in level of remaining field = 40/160 =0.25m