Mathematics, 02.03.2020 22:55, pradojosselinep34b1k

At the mission museum Mrs. Perez visited over break, there is a pond like the one below that has a ring shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 10 m. The inner edge of
the sidewalk is a circle with a radius of 8 m.
(a) Write and simplify an expression for the exact area of the sidewalk.

(b) Find the approximate area of the sidewalk. Use 3.14 to approximate .

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At the mission museum Mrs. Perez visited over break, there is a pond like the one below that has a r...