Check the picture below.
Circle Q has a circumference of approximately 50 centimeters. Circle Q with diameter d is shown. What is the approximate length
2 answers:
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Answer:
<h2>B) 26 cm</h2>Step-by-step explanation:
Look at the picture.
Use the Pythagorean theorem:
We have
Substitute:
Answer:
See below.
Step-by-step explanation:
Recall the equation for a circle:
, where (h,k) is the center and r is the radius.
We need to turn the given equation into the above format. We do this by completing the square.
First, group them:
For the first section, complete the square for :
Do the same for the second:
All together:
The center is (-9,-7).
The radius is