https://pwnd9373-ndscholarship-ccl.gradpoint.com/Resource/630568,72F,0,0,0,0,0/Assets/testitemimages/geometry_b/circles/mc036-1.jpg What is the value of x to the nearest tenth?
@whpalmer4 @primeralph @mathstudent55 helllllpp
|dw:1374261700390:dw|
|dw:1374261758383:dw|
Use the Pythagorean theorem to find the radius
so do i do 24=6x and then do 24/6=6x/6 which=4
\[r = x\]
no, you do \[r^2 = 6^2+12^2\]
because that line from the center to the chord is perpendicular, it bisects it, giving you 12 as the base of the triangle, 6 as the height, and r as the hypotenuse.
the answer is12
Whose answer is 12?
these are the answer choices 5.5 4.9 12.0 13.4
Well, obviously it isn't one of the first 2, because 6 doesn't even go from the center to the edge, right? 12 is a a trap answer. \[r^2 = 6^2+12^2 = 36 + 144 = 180\]\[r = \sqrt{180} = \sqrt{9*20} = 3\sqrt{20} = 3\sqrt{4*5} = 3*\sqrt{4}*\sqrt{5} = 6\sqrt{5}\]\[\sqrt{5} \approx 2.236\]\[6\sqrt{5}\approx 13.4\]
@whpalmer4 can you help me https://pwnd9373-ndscholarship-ccl.gradpoint.com/Resource/630568,72F,0,0,0,0,0/Assets/testitemimages/geometry_b/surface_area_and_volume/mc020-1.jpg
The plane is vertical. What best describes the shape of the cross section?
My preference is one question per post, thanks. Also, I prefer helping people who give out medals when they get help! Looks like |dw:1374263063531:dw|
Join our real-time social learning platform and learn together with your friends!