Find the area of the circle with diameter of 11mm leaving answer in terms of pi

Δabc is reflected across line l to form δ alblcl, and a¯¯¯al¯¯¯¯ intersects line l at point d. which equation is not necessarily true?

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class