That 10 is the diameter of the circle. First let's find the area of the square. A = s^2 Where 's' is the side. A = 10^2 A = 100 Now let's find the area of the circle. The '10' is also the diameter of the circle. A = pi * r^2 A = 3.14 * 5^2 A = 3.14 * 25 A = 78.5 Now subtract this from the area of the square. 100 - 78.5 = 21.5 So the approximate area of the shaded region is 21.5cm^2
Lines that intersect are intersecting or crossing lines. Perpendicular lines are lines that cross at a 90 degree angle. Skew lines are lines that are non-coplanar and don’t intersect.
