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. Th
e 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
1 answer:
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
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