Question

A feild is 15m long and 12m broad . at one corner of the feild a rectangular well of dimensions 8m,2.5m,2m is dug out soil is spred evenly over the rest of the feild find the rise in level of the rest of the feild​

Answer 1

Step-by-step explanation:

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