what is the area of a circular ring with outer and inner radii as r1 and r2respectively
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Answered by
6
Answer:
Area of outer ring = pier1²
Area of inner ring = pier2²
Answered by
1
Answer:
Step-by-step explanation:
area of a circle= πr²
for 1st circle
area = π r1²
for second circle
area = π r2²
area of ring = outer area - inner area
= πr1² -π r2²
= π (r1 -r2)²
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