Can someone just confirm if answer is correct for me?

Question

anonymous · Answer

Radius = 34 feet.
		Radius = H/2 + W2/8H
		W = Length of Chord defining base of arc
		H = Height measured at midpoint of arc’s base
			(18/2) + (602/8(18))
			(9) + (3600/144)

jim_thompson5910 · Answer

Draw a circle

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jim_thompson5910 · Answer

Draw a chord on the circle

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jim_thompson5910 · Answer

the arc that gets cut off is the arc length they want

jim_thompson5910 · Answer

Add in a radius such that it is perpendicular to the chord
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jim_thompson5910 · Answer

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jim_thompson5910 · Answer

you will then use the intersecting chords theorem to find the radius http://www.mathopenref.com/chordsintersecting.html

jim_thompson5910 · Answer

btw, the radius is the perpendicular bisector of the chord, so the chord is broken up into two pieces

jim_thompson5910 · Answer

does that help at all, @ck76 ?

anonymous · Answer

Is the answer 50?

jim_thompson5910 · Answer

correct

jim_thompson5910 · Answer

actually no, sorry

jim_thompson5910 · Answer

50 is close, but not quite there

jim_thompson5910 · Answer

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jim_thompson5910 · Answer

notice how the distance I marked doesn't quite get to the tip of the circle

anonymous · Answer

yes

anonymous · Answer

si I am still confused on what answer should be

anonymous · Answer

I understand A.B = C.D. So 30 *30 = 18 *x. Not sure where to go from there though.

jim_thompson5910 · Answer

well you solved for x to get x = 50

the radius is x+18 = 50+18 = 68

jim_thompson5910 · Answer

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