Ask Question
9 May, 19:35

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.

+5
Answers (1)
  1. 9 May, 22:50
    0
    The formula for area of a circle is : A = PI x r^2

    A) find the are of the two circles, subtract the two to find the area of the side walk:

    Outside circle: A = PI x 10^2

    Area = 100PI

    Inner circle: A = PI x 8^2

    Area = 64PI

    Area of sidewalk:

    100PI - 64 PI = 36PI

    B) replace PI with 3.14:

    Area = 36 x 3.14 = 113.04 square meters.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “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 ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers