Answer:
A 1 =2πr 12 4r 1 =5r 2 r 12
A 1 =2π = r 22
A 2r 1 = 45r 2
A 2 = r 22
r 12 = r 22
( 45r 2 ) 2
= 4 25 2
16A 1=25A 2
Refer to the attached picture
Step-by-step explanation:
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Answer:
A 1 =2πr 12 4r 1 =5r 2 r 12
A 1 =2π = r 22
A 2r 1 = 45r 2
A 2 = r 22
r 12 = r 22
( 45r 2 ) 2
= 4 25 2
16A 1=25A 2
∴16:25
Verified answer
Answer:
Refer to the attached picture
Step-by-step explanation:
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