Answer:
Image B shows a reflection.
Answer:
0
Step-by-step explanation:
It doesn't matter what 2 points you pick, it will always be 0. For example:
which equals 0.
Answer:
The weight of the three blades together is 
Step-by-step explanation:
step 1
Find the area of the circle
The area of the circle is equal to

we have

assume

substitute


step 2
Find the area of the 3 blades
we know that
The area of the 3 blades represent a central angle of 60 degrees, so
its a 1/6 of the area of complete circle

step 3
Find the weight of the three blades together to the nearest gram

Answer:
Step-by-step explanation:
add all of them and then see if they right
38.97 would be standard form