##### How can I understand geometry in order to calculate the length of a circle?

 Mathematics Tutor: None Selected Time limit: 1 Day

Oct 30th, 2015

Thank you for the opportunity to help you with your question!

If the measure of angle PLA is 110 then the measure of angle PDA is 220. An inscribed angle (that touches the inside surface of the circumference) has a measure half as large if the angle's middle point (in this case D) is at the center of the circle. The measure of angle PDA will be the same as the measure of arc length as PYA which the angle would encompass. Thus, 220=12x-20

Add 20 to both sides of the equation.

240=12x Divide both sides by 12

x=20

The answer is C.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 30th, 2015

...
Oct 30th, 2015
...
Oct 30th, 2015
Dec 9th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer