A circular path is enclosed by two concentric circles. if the outer circumference of the path is 88cm and the uniform width of the path is 3.5 cm, find the area of the path?
Answers
Answered by
120
let the outer radius R
2πR=88
2*22/7*R=88
R=14
inner radius r=10.5
area of the path =π(14²-10.5²)=22/7*(196-110.25)=22/7*85.75=22*12.25=269.5cm²
2πR=88
2*22/7*R=88
R=14
inner radius r=10.5
area of the path =π(14²-10.5²)=22/7*(196-110.25)=22/7*85.75=22*12.25=269.5cm²
Answered by
58
Answer:
Step-by-step explanation:
88=2*22*r/7
r=88*7/22*2
=14
14-3.3=10.5
A=πr^2
22*10.5*10.5/7
22*1.5.10.5
269.5
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