PLEASE HELP WITH THIS.
:)
2 answers:
Answer:
65.94
Step-by-step explanation:
Find the area of the smaller circle and subtract it from the area of the larger circle. This is the area of the shaded region.
Larger Circle - If d = 12.5, then the radius r = 6.25.
Area = π(6.25)² = 122.66
Smaller Circle - If d = 8.5, then the radius r = 4.25.
Area = π(4.25)² = 56.72
Shaded region - 122.66 - 56.72 = 65.94
Answer:
65.94 cm²
Step-by-step explanation:
12.5/2 = 6.25 = radius of large circle
8.5/2 = 4.25 = radius of small circle
A= πr²
A of large circle = 3.14(6.25²) = 122.66
A of small circle = 3.14 (4.25²) = 56.72
122.66 - 56.72 = 65.94 cm²
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