Question

the ratio of diameters of two circles is 5 : 8 find the ratio of their circumference​

Answer 1

Answer:

let D be the diameter of the bigger circle

let D be the diameter of the bigger circlelet d be the diameter of smaller circle

let D be the diameter of the bigger circlelet d be the diameter of smaller circled:D = 5:8

let D be the diameter of the bigger circlelet d be the diameter of smaller circled:D = 5:8d/D=5/8..........1

let D be the diameter of the bigger circlelet d be the diameter of smaller circled:D = 5:8d/D=5/8..........1circumference of smaller circle/circumference of bigger circle=πd/πD

let D be the diameter of the bigger circlelet d be the diameter of smaller circled:D = 5:8d/D=5/8..........1circumference of smaller circle/circumference of bigger circle=πd/πD=d/D. .........π=π get cancelled

let D be the diameter of the bigger circlelet d be the diameter of smaller circled:D = 5:8d/D=5/8..........1circumference of smaller circle/circumference of bigger circle=πd/πD=d/D. .........π=π get cancelled=5/8..........from 1

let D be the diameter of the bigger circlelet d be the diameter of smaller circled:D = 5:8d/D=5/8..........1circumference of smaller circle/circumference of bigger circle=πd/πD=d/D. .........π=π get cancelled=5/8..........from 1therefore the ratio of the circumference is 5:8

let D be the diameter of the bigger circlelet d be the diameter of smaller circled:D = 5:8d/D=5/8..........1circumference of smaller circle/circumference of bigger circle=πd/πD=d/D. .........π=π get cancelled=5/8..........from 1therefore the ratio of the circumference is 5:8please mark it brainliest

Answer 2

Answer:

$2\pi \: r = \pi \: d$

$\frac{d1}{d2} = \frac{5}{8}$

ratio of circumference =

$\frac{\pi \: d1}{\pi \: d2} = \frac{5}{8}$

because π is cancelled

so ratio will be 5:8

Hope it helps...

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