Answered

IDNLearn.com provides a comprehensive solution for all your question and answer needs. Ask anything and receive immediate, well-informed answers from our dedicated community of experts.

Two disinfectants were tested for their effectiveness against a strain of bacteria.
Disinfectant A had a clear circle with 3 mm diameter.
Disinfectant B had a clear circle with 6 mm diameter.
Calculate the difference in the bacteria-free area between disinfectant A and
disinfectant B.
e:
6.8 mm2
4.7 mm2
9.4 mm2
21.2 mm2

Sagot :

Samuellayearkeridn

Answer: is 84.78 mm^2

Explanation:

we will first find out their areas, the area to be found is of a circle [tex]\pi[/tex]R^2

for the first one,

R=radius

pi=3.14

so,=3.14*(3mm*)^2

=28.26mm^2

for the second one

=3.14*(6mm*)^2

=113.04mm^2

their differences are equal to 113.04 - 28.26

=84.78 mm^2

Pstnonsonjokuidn

Given the values that are supplied in the question, the difference in the bacteria-free area between is  21.2 mm^2.

What is disinfection?

The term disinfection has to do with the ability of the substance to inhibit the growth of organisms as seen by the area of each concentric circle.

In this case, the difference in the bacteria-free area between disinfectant A and disinfectant B is;

3.142 * (6/2)^2 - 3.142 * (3/2)^2

= 28.3 - 7.1

=21.2 mm^2

Learn more about disinfection:https://brainly.com/question/14781146?

#SPJ2

Thank you for participating in our discussion. We value every contribution. Keep sharing knowledge and helping others find the answers they need. Let's create a dynamic and informative learning environment together. Thanks for visiting IDNLearn.com. We’re dedicated to providing clear answers, so visit us again for more helpful information.