Geometry help please

Tae · August 2nd, 2016, 06:11 PM

A plane cuts sphere O in a circle ⊙P that has diameter 2√34. If the diameter of sphere O is 20, how far is the plane from O?

greg1313 · August 2nd, 2016, 06:53 PM

Hi Tae and welcome to the forum.

You've got an isosceles triangle with equal sides 10 and "base" 2√34. Find the height and you've found your required distance.

August 2nd, 2016, 06:11 PM	#1
Tae Newbie Joined: Aug 2016 From: Florida Posts: 1 Thanks: 0	Geometry help please A plane cuts sphere O in a circle ⊙P that has diameter 2√34. If the diameter of sphere O is 20, how far is the plane from O?
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August 2nd, 2016, 06:53 PM	#2
greg1313 Global Moderator Joined: Oct 2008 From: London, Ontario, Canada - The Forest City Posts: 7,958 Thanks: 1146 Math Focus: Elementary mathematics and beyond	Hi Tae and welcome to the forum. You've got an isosceles triangle with equal sides 10 and "base" 2√34. Find the height and you've found your required distance.
$greg1313 is offline$

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