The answer to question 18 is C. and the answer to question 19 is B
To have a different rectangle with the same perimeter you just have different measurements. If you need an example let me know!
The simplified form of the given expression is 
.
The given expression is 
.
We need to simplify the given expression.
<h3>What are the basic laws of exponents?</h3>
The basic laws of exponents are as follows:
Now, 
Therefore, the simplified form of the given expression is .
To learn more about the exponents visit:
brainly.com/question/26296886.
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The correct answer for the exercise shown above, is the first option (Option A), which is:
A. <span>(1+1/18)^18
The explanation is shown below:
1- You have that the number e is an irrational number, therefore, its value is aproximated:
e=2.7182
2- You have the following expressions:
</span>(1+1/18)^18=2.6464
<span>(1+1/17)^17=2.6424
</span><span>(1+1/16)^16=2.6379
</span><span>(1+1/15)^15=2.6328
Therefore the value of the expression that is closest to e is the Option A.</span>
We know that
area of circle =pi*r²
for r=4 ft
area=pi*4²------> 16*pi ft²
<span>the shaded sector of the circle represent 3/4 of the total area
so
3/4*16*pi-----> 12*pi ft</span>²
the answer is
12*pi ft²
