Question

The population density of worms in a particular field is 25 worms per cubic meter of soil. How many worms would there be in the top meter of soil in a field that has dimensions of 1.00 km by 2.0 km?

Answer 1

See below...

Explanation:

1 `m^3 = 1m . 1m . 1m` (length x width xheight)
so,
1m height x 1km (width) x 2 km (length)

`rarr`Volume of soil =`1m . 1.10^3m . 2.10^3m`

`rarr V_"soil" = 2.10^6m^3`

25 worms per `m^3`,

`rarr 25 . 2.10^6m^3= 5.10^7` worms...