A circular pool has a radius of 2 m and is surrounded by a trapezoidal deck CDEF as shown. The two parallel sides of the trapezoid have lengths of CD = 10 m and FE = 13 m. The pool deck is surrounded by a concrete sidewalk with a width of 1 m. Find a way to calculate the approximate total area of the sidewalk.

Select the correct answer. given: ∆abc with prove: statement reason 1. given 2. ∠cab ≅ ∠edb ∠acb ≅ ∠deb if two parallel lines are cut by a transversal, the corresponding angles are congruent. 3. ∆abc ~ ∆dbe aa criterion for similarity 4. corresponding sides of similar triangles are proportional. 5. ab = ad + db cb = ce + eb segment addition 6. substitution property of equality 7. division 8. subtraction property of equality what is the missing statement in the proof? scroll down to see the entire proof.