Question 20
What is the area of the shaded region? Take $\pi=22/7$.
Editorial interpretation of the schematic: the marked 35 is the outer radius. The two congruent inner circles touch at the outer centre and touch the outer circle at the top and bottom.
Editorial interpretation of the schematic: the marked 35 is the outer radius. The two congruent inner circles touch at the outer centre and touch the outer circle at the top and bottom.