tmua 2021 Q7

tmua · Uk · paper2 1 marks Circles Optimization on a Circle
A circle has equation $( x - 9 ) ^ { 2 } + ( y + 2 ) ^ { 2 } = 4$
A square has vertices at $( 1,0 ) , ( 1,2 ) , ( - 1,2 )$ and $( - 1,0 )$.
A straight line bisects both the area of the circle and the area of the square. What is the $x$-coordinate of the point where this straight line meets the $x$-axis?
A 2
B 3
C 4
D 4.5
E 5
F 6
G The straight line is not uniquely determined by the information given, so there is more than one possible point of intersection. $\mathbf { H }$ There is no straight line that bisects both the area of the circle and the area of the square.
..... 9
A circle has equation $( x - 9 ) ^ { 2 } + ( y + 2 ) ^ { 2 } = 4$\\
A square has vertices at $( 1,0 ) , ( 1,2 ) , ( - 1,2 )$ and $( - 1,0 )$.\\
A straight line bisects both the area of the circle and the area of the square.\\
What is the $x$-coordinate of the point where this straight line meets the $x$-axis?

A 2

B 3

C 4

D 4.5

E 5

F 6

G The straight line is not uniquely determined by the information given, so there is more than one possible point of intersection.\\
$\mathbf { H }$ There is no straight line that bisects both the area of the circle and the area of the square.