...did you multiply by the 'pi' before you just took and ran with the numerical answer?
Sorry....I typed it backwards after working it out on paper
sqrt (2) - 1
2x^2+2y^2+20x-16y-18=0 divide by 2
x^2 + 10x + y^2 - 8y = 9 complete the square for x and y
(x+5)^2 + ( y -4)^2 = 9 + 25 +16
= 50 this is a circle centered at -5,4 and r^2 = 50 <===== use this to calculate the area of the circle
*** edit *** ( the last line is incorrect ...I added instead of multiplying)
A = C and B = D
a+ a + b + b = 36
a+b =18
a+2 = b-2
then a = 7 b = 11 c = 11 and d= 7
7 * 11*7*11 = 170
7 * 11 *7 * 11 = 5929
( s + y+ x + z) / 4 = 80 320 - (x+y+z) = s
(x+y+z + b)/4 = 96 384 - (x+y+z) = b
384 - 320 = range = 64
6 choices X 14 X 3 X 7 = __________ possibles
3^2 4^2 5^2 6^2 7^2 8^2 six
One value .
x+y =25 y = 25 -x
x-y = 18 sub in for y
x -(25-x) = 18
2x = 43
x = 21.5
y = 3.5 21.5 *3.5 = _________
