Answer:
Area of sidewalk = 178.98 m²
Step-by-step explanation:
Given:
Diameter = 16 m
Length of sidewalk = 3 m
Find:
Area of sidewalk
Computation:
Radius of circle = 16 / 2 = 8 m
Radius of outer circle = 8+3 = 11 m
Area of sidewalk = π[r1² - r2²]
Area of sidewalk = π[r1² - r2²]
Area of sidewalk = 3.14[11² - 8²]
Area of sidewalk = 3.14[121 - 64]
Area of sidewalk = 3.14[57]
Area of sidewalk = 178.98 m²
