Perimeter is all the sides added up so 20+20+10=50 the 50+10=60 so 10 is your answer
Answer:
<h2><em><u>5</u></em></h2>
Step-by-step explanation:
<h3><em><u>Given</u></em><em><u> </u></em><em><u>Question</u></em><em><u>:</u></em></h3>

<em><u>Given</u></em><em><u> </u></em><em><u>values</u></em><em><u> </u></em><em><u>-</u></em>
r = 4 , s = 1
<em><u>Therefore</u></em><em><u> </u></em><em><u>putting</u></em><em><u> </u></em><em><u>their</u></em><em><u> </u></em><em><u>values</u></em><em><u> </u></em><em><u>in</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>question</u></em><em><u>, </u></em>

= 4 + 1
= <em><u>5 (Ans)</u></em>
The answer should be 40% because thats the max the density goes
<span>1. know what the variables are and identify them 2. Group all the same types together that are on one side 3. add or subtract whole numbers so they are on one side 4. add or subtract variables 5. Multiply or Divide the variables to get them to one side </span>
It would be B, because BC does not necessarily have to be equal to CE, as they are not congruent