Question

Outside the city of Five Points, a small illegal dump is found containing old computer monitors. The concentration of lead in the soil is 200 ppm in a primary area, a circular region with a radius of 7 meters centered at the dump. A secondary area with an additional width of 7 meters has a concentration of 20 ppm.

Answer 1

please help me

Answer 2

@Whitemonsterbunny17 @uybuyvf @Nnesha @pooja195 @Legends @SithsAndGiggles @Concentrationalizing Just help with a and b

Answer 3

@Icedragon50 just a and b

Answer 4

Lead can be treated at a cost of $9/m2 with phytoremediation with sunflowers or $45/m3 with removal of soil by excavation.

Show your work in each calculation below.

a)What is the range of lead concentrations in mg/kg?
b)What is the area of the primary area? What is the area of the secondary area?

Answer 5

@Preetha @poisonIV @jagr2713 @SithsAndGiggles @lalaland_lauren @batman19991 @creegan @raiders88 @ash2326 @Lilmike234 @NeonStrawsForever @FEARLESS_JOCEY @sleepyjess @superhelp101

Answer 6

@automaticloveletter

Answer 7

Is there a question here somewhere?

Answer 8

I couldn't understand

Answer 9

Please don't tag the world