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In the figure below, the rectangular at the corner measures
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22 Jul 2020, 10:41
22 Jul 2020, 10:41
Expert Reply
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Question Stats:
28% (02:09) correct
71% (02:01) wrong based on 28 sessions
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In the figure below, the rectangular at the corner measures 10cm x 20cm. The corner A of the rectangle is also a point on the circumference of the circle. What is the radius of the circle in cm?
A) 10
B) 40
C) 30
D) 50
E) None of the above
A) 10
B) 40
C) 30
D) 50
E) None of the above
Re: In the figure below, the rectangular at the corner measures
[#permalink]
23 Jul 2020, 01:36
23 Jul 2020, 01:36
1
Explanation please
Re: In the figure below, the rectangular at the corner measures
[#permalink]
23 Jul 2020, 02:00
23 Jul 2020, 02:00
4
Expert Reply
Consider the diagram below:
(r - 10)^2 + (r - 20)^2 = r^2;
r = 10 or r = 50.
r cannot be 10, so it's 50.
Answer: D.
(r - 10)^2 + (r - 20)^2 = r^2;
r = 10 or r = 50.
r cannot be 10, so it's 50.
Answer: D.
