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The circumference of a circle is 440 cm. Find its radius and diameter. (Take π = 227) - Mathematics

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Question

The circumference of a circle is 440 cm. Find its radius and diameter. (Take π = `22/7`)

Sum

Solution

It is given that,

Circumference of a circle = 440 cm

So the radius = `C/(2pi)`

Substituting the values,

` = (440xx7)/(2 xx 22)`

So we get

 `= 3080/44`

= 70 cm

Diameter of the circle = 2 × radius`

So we get

= 2 × 70

= 140 cm.

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Chapter 20: Mensuration - Exercise 20 (A)

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Selina Concise Mathematics [English] Class 7 ICSE
Chapter 20 Mensuration
Exercise 20 (A) | Q 13
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