Answer:
Below.
Step-by-step explanation:
Yes - those are 2 semicircles so their combined area = πr^2
= 3^2π
= 9π.
When x = ±√3, -2, then the factors are (x - √3)(x + √3)(x + 2) = 0.
(x - √3)(x + √3)(x + 2) = 0
(x² - 3)(x + 2) = 0
x³ + 2x² - 3x - 6 = 0 (Second choice)
2,4,6,8,10,12,14,16,18,20
Answer : 1. (C) is the right answer "Intersecting arcs are created and connected".
2. (D) is the right answer "Create a circle from a given center with a compass".
For example to create inscribed square .
Step1) Create a circle from a given center O with a compass.
Step2) Draw a diagonal passing through O and marked as AB on the circle.
Step3) Put compass at A then draw arcs above and below O. Similarly draw arcs from B intersecting arc formed by A.
Step4) Create a line across both the point of intersection by using a straightedge and intersects the circle at C above and t D below center O.
Step5) Join all the four points on the circle which would become the vertices of the square ACBD.