A = pi * r^2
12/ 3.14 = r^2
1.9549 = r
Find the radius if a circular lid with an area of 12inch ^2.
using (y-h^2 (y-k)^2=r2
I'm pretty confused any help would be great.
3 answers
I'm confused I turned it in that way and was told that wasn't the correct formula for algebra formula.So is there really a different way to write it?
And I am confused by your question.
What does "using (y-h^2 (y-k)^2=r2 " have to do with it.
First of all you typed it incorrectly, should be
using (y-h)^2 + (y-k)^2=r^2
that would be the equation of a circle with centre (h,k) and radius r.
But you simply wanted the radius for a circle with area of 12 square units
so :
πr^2 = 12
r^2 = 12/π
r = √(12/π) = appr 1.9544 which is what Ms Sue gave you
What does "using (y-h^2 (y-k)^2=r2 " have to do with it.
First of all you typed it incorrectly, should be
using (y-h)^2 + (y-k)^2=r^2
that would be the equation of a circle with centre (h,k) and radius r.
But you simply wanted the radius for a circle with area of 12 square units
so :
πr^2 = 12
r^2 = 12/π
r = √(12/π) = appr 1.9544 which is what Ms Sue gave you
2 answers