Question

Two circles having the same centre have radii 350 m and 490 m what is the difference between their circumfrances

Answer 1

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CASE I –

r=350m.

circumference=2πr
=2×22/7×350
=44×50
=2200

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CASE II –

r=490

circumference=2πr
=2×22/7×490
=44×70
=3080

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NOW,

Their differences -

3080-2200
=880

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Answer 2

Answer:

880

Explanation:

Circumference-The meaning of circumference is the distance around a circle or any curved geometrical shape. It is the one-dimensional linear measurement of the boundary across any two-dimensional circular surface

Solving way-

For the first circle-

r=350m. (Given)

circumference=2πr

$2*22/7*350=44*50=2200$

For the second circle-

r=490

Circumference=2πr

$=2*22/7*490=44*70=3080$

Their differences -

$3080-2200=880$

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https://brainly.in/textbook-solutions/q-area-quadrant-circle-circumference-88-cm?source=quick-results

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