Answer:
130.5
Step-by-step explanation:
similar shapes have proportional sides so divide 18/27 to get the proportion then multiply each side of the smaller polygon by the proportion to get the sides for the larger polygon and add the larger polygons sides together.
I think it is 3.25%. That is what I had got when I had did my math
Answer:
ways.
Step-by-step explanation:
is the number of ways in which 
distinct objects are selected from a pile of 
distinct objects.
In our question,there are a total of 
people.
So,
.
Given that three are selected at random.
So,
.
So,the answer is ways.
Answer:
The answer is 1.
Step-by-step explanation:
Nobel gases have full shell of valence electrons, that is why they tend to not enter any chemical reactions because they are satisfied while metals have very few electrons in the valence shell, so they are active in any chemical reaction.
