In the image, two circles are centered at A. The circle containing B was dilated to produce the circle containing B′. What is th
e scale factor of the dilation?
1
2
0.5
-0.5
1
2
0.5
-0.5
2 answers:
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30% of number A means
similarly, 40% of number B means
These must be equal, so we have
Multiply both sides by 10 to get
So, you can choose any number for A, and then you multiply it by 4/3 to get B. There are infinitely many solutions to this equation.
→Answer:
→Step-by-step explanation:
Well the formula for the area of a circle is .
<u><em>→Given information</em></u>
Pi is 3.142
radius is 4 cm
answer must be rounded to the nearest tenth
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So now we have to plug in the given information into the following formula .
(3.142)(4)^2
So now we have to solve this formula using PEMDAS.
So 4 squared is 16 and 16*3.142 is 50.272cm^2.
The question clearly states the given answer must be rounded into the nearest tenth so 50.272 is 50.3 cm^2.
__________________I do hope this helps!__________________________