Question

At a zoo, the lion pen has a ring-shape 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 7 m. Find the approximate area of the blue circle. Use 3.14 to approximate n. 10 m 7 m​

Answer 1

Answer:

160.14m²

Step-by-step explanation:

Area of circle = πr²  = 3.14r²

Area of sidewalk = area of outer circle  - area of inner circle

a = 3.14 * 10² - 3.14 * 7²

a = 3.14 * 100 - 3.14 * 49

a = 314 - 153.86

a = 160.14

160.14m²