Answer:

Step-by-step explanation:
Given
See attachment
Required
The area of the semicircle
First, we calculate the hypotenuse (h) of the triangle
Considering only the triangle, we have:
--- cosine formula
Make h the subject



The area of the semicircle is then calculated as:

This gives:



Answer:
12 1/2% DISCOUNT:
Step-by-step explanation:
Jacket: $60.81
Tie: $13.56
Raincoat: $65.93
Answer: I am pretty sure it is 300. If it is not my bad But I am pretty sure it is.
Step-by-step explanation: I worked it out.
<u>Part a) </u>
we know that
An isosceles triangle has two base angles that are congruent
The sum of two base angles plus the vertex angle is equal to
degrees
so
In this problem



Solve for x




therefore
<u>the answer part a) is</u>
the value of x is 
<u>Part b)</u> What is the measure of each base angle?
we know that

we have that

substitute the value of x in the equation


therefore
<u>the answer part b) is </u>
the measure of each base angle is 
Answer:
7545xy
Step-by-step explanation:
i hope this helps