Mathematics, 12.01.2021 18:20 kristadwsn
Hey, Please answer these questions as fast as possible for 20 points (first to answer all questions is brainiest).
- 1. Pia drew a circle with a circumference of C and a diameter of 14 in. Pia knows that C= Οd, and she wrote the following equation to represent the value of Ο.
(a) There is an error in Piaβs equation. Write an equation to correctly represent the value of Ο.
(b) Write an equation and find the circumference of the circle.
Show your work.
- 2. Hank used a semicircle, a rectangle, and a triangle to form the following composite figure. What is its area in square centimeters? Use 3.14 to approximate Ο. Show your work.
- 3. At a zoo, the lion pen is surrounded by a ring-shaped sidewalk. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 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 Ο. Show your work.
Please answer these questions truly and not for free points (if you do this for free points, you're welcome I guess). I really need the answers to this. Also the first picture is for question 2, and the second one is for question 3. Thank you whoever answered these questions! Here's a cookie.
Answers: 3
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Hey, Please answer these questions as fast as possible for 20 points (first to answer all questions...
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