Question

The Ratio Between the diameters of two circles Is 3:5 Find the ratio Between their circumstances .​

Answer 1

Answer:

as we know the formula

circumference = 2πr

so we know the diameter ratio

ie we know 2r of both the circles

so π will get cancelled

and the final ratio will be

= 3:5

Step-by-step explanation:

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Answer 2

To Find :-

• The ratio between their circumference.

Solution :-

• The ratio between the diameter of two circles is 3 : 5. (Given)

We know that,

↪ Diameter = 2 × Radius

.°. Ratio of diameter = Ratio of radius

↪ Ratio of radius = 3 : 5

Now,

Let radius of first circle = 3r

And radius of the second circle = 5r

[ For first circle ]

↪ Circumference of first circle = 2πr

↪ Circumference of first circle = 2 × π × 3r

↪ Circumference of first circle = 6πr

[ For second circle ]

↪ Circumference of second circle = 2πr

↪ Circumference of second circle = 2 × π × 5r

↪ Circumference of second circle = 10πr

So, ratio between their circumference,

↪ 6πr : 10πr

↪ 6 : 10

↪ 3 : 5

Therefore,

The ratio between their circumference is 3 : 5.