Answer:
Your supposed to do that.
Explanation:
Insecticides- made for insects
herbicides- made for plants
larvicides- made for larvae
fungicides- made for fungi
bactericides- made for bacteria
rodenticides- made for rodents
molluscicides- made for molluscs
Answer:
36-45 inches
Explanation:
The regulation for all forms of these types of objects with dangerous voltage and the potential to discharge is generally 36-45 inches, in which a perimeter is to be formed with appropriate precautions and markings with NON conductive materials. . .you know, so electricity doesn't discharge, take the nearest conductor, rebound & amplify, and strike the nearest guy dead.
You have one answer that matches this regulation. . .3 feet.
However, I wouldn't rule out 5 feet.
The other options are ludicrous and will increase the danger.
Your first and best option is 3 ft, but if you need a last-resort, 5ft is also viable.
1. Using washers, the volume is given by the integral


We're using washers whose centers depend on the value of
, hence we integrate with respect to
2. The area of the given region is given by the integral

To compute the integral, first consider the substitution
, or
so that
. Then
and
, so the integral is equivalently

Integrate by parts, taking


so that

and
, so the area is

For the remaining integral, substitute
, so that
. Then
and
:

(notice that the integral is improper)

