I'm confused about these questions. I don't know how I'm supposed to write an equation of a circle with the area/circumference and pi. Please show work because I really need help and to understand this. Please help.
+36915 If circumference is 14 pi
Circumf = pi * d so d = circumf / pi = 14 radius = 7
Circle with center at h,k and radius r formula is (x-h)^2 + (y-k)^2 = r^2 (remember that?)
(x-10)^2 + (y-7)^2 = 7^2
Area = pi r^2 400pi /pi = radius^2 = 400 r=20
(x+4)^2 + (y+5)^2 = 400 (edited typo)
the last two are similar and youo should try them yoursefl
+36915 If circumference is 14 pi
Circumf = pi * d so d = circumf / pi = 14 radius = 7
Circle with center at h,k and radius r formula is (x-h)^2 + (y-k)^2 = r^2 (remember that?)
(x-10)^2 + (y-7)^2 = 7^2
Area = pi r^2 400pi /pi = radius^2 = 400 r=20
(x+4)^2 + (y+5)^2 = 400 (edited typo)
the last two are similar and youo should try them yoursefl
