Question

if the area of a circle A1 is 25 time the area of a circle A2 then the ratio of their circumference is

Answer 1

Answer:

The ratio of the two circles is 1:25

Step-by-step explanation:

The area of first circle is A₁

So, the area of other circle will be 25A₁

A₁/A₂ = πr₁/πr₂

A₁/25A₁ = πr₁/πr₂

A₁ and π gets cancelled

So,

1/25 = r₁/r₂ ..........1

Circumference of first Circle be C₁

Circumference of second circle be C₂

So,

C₁/C₂ = 2πr₁/2πr₂

2π gets cancelled

= r₁/r₂

= 1/25 .......[from 1]

So, the ration of cicumference of the two circle is 1:25

HOPE IT HELPS YOU!!

Answer 2

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