Finding a radius to a line with two known points

[Ahatmose]

Hi. Not sure how to approach this problem and I am hoping you people can help.




Thanks in advance
Ahatmose

 

[Steven G]

Is that the entire problem??

 

[Ahatmose]

Is that the entire problem??

Er ... yes it is. I am trying to figure out how it would have been possible to lay out the pyramids of Giza. This arc is important in tying in two key points

 

[Ahatmose]

It may be easy to some but I am drawing a blank on it. Here is the problem solved by drawing the circle but that is not feasible in my scenario.

 

[Ahatmose]

is this correct ?



I believe this is indeed correct because small triangle is 13 by 4 and thus diameter would be (13 /4) x 13 or 42.25 which I believe is what I scaled when I drew the circle. Nope I scaled it at about 45.25 ... hmmm

 

[Ahatmose]

Find The Radius Of A Circle With Two Points On The Circle​

In this case, we cannot solve for a single circle, since we do not have enough information. Instead, we would get an entire family of circles that contain both points.

Oh drat.

How To Find Center & Radius Of A Circle (3 Methods) | jdmeducational

To find the center & radius of a circle, put the circle equation in standard form. We can also use three points on a circle (or two points if they are at opposite ends of a diameter) to find the center and radius. In addition, we can use the center and one point on the circle to find the radius.

jdmeducational.com