The answer is (1,-10)
You solve this by equating the two equations:
-x2 -5x -4 = -x2 +9x -18
-14x = -14
x =1
You then substitute 1 to either of the equations to find y:
y = -(1)2 -5(1) -4
y = -10
Therefore, the solution is (1,-10)
8×5=40
40h-3=0
+3
40h=3
÷40
h=3/40
The length of the curved surface is the circumfrence of a circle with radius r = 10/2 = 5 decimeters.
Length of curved surface = 2π x 5 = 10π ≈ 31.4 decimeters.
