You do this by calculating the area.
Area of the square = s^2
s = 2 + 2 = 4
s^2 = 16
Area of the circle = pi r^2
r = 2
pi = 3.14
P = 12.56 / 16 = 0.785
The percentage = 0.785 * 100% = 78.5%
Question 35
y = k/x
k = constant of proportionality
3 = k/-15
We first find k.
3(-15) = k
-45 = k
y = k/x
y = -45/5
y = -9
Did you follow?