{"id":8887,"date":"2021-12-06T00:03:26","date_gmt":"2021-12-05T18:33:26","guid":{"rendered":"https:\/\/mathemerize.com\/?p=8887"},"modified":"2021-12-07T20:39:29","modified_gmt":"2021-12-07T15:09:29","slug":"formula-for-circumference-of-circle","status":"publish","type":"post","link":"https:\/\/mathemerize.com\/formula-for-circumference-of-circle\/","title":{"rendered":"Formula for Circumference of Circle (Perimeter) – Examples"},"content":{"rendered":"

Here you will learn what is the formula for circumference of circle (perimeter of circle) with examples.<\/p>\n

Let’s begin –<\/p>\n

What is Circumference ?<\/h2>\n

The perimeter (boundary) of a circle is called its circumference. It is the distance covered by travelling once around circle.<\/p>\n

Formula for Circumference of Circle (Perimeter of Circle)<\/h2>\n
\n

Circumference of circle = \\(2\\pi r\\) <\/p>\n<\/blockquote>\n

where r is the radius of circle.\"circumference<\/p>\n

And \\(\\pi\\) is an irrational number whose approximate value is \\(22\\over 7\\) or 3.1415….. unless specified, the value of \\(\\pi\\) should be taken as \\(22\\over 7\\)<\/p>\n

<\/p>\n

Circumference (Perimeter) of Semicircle<\/h2>\n
\n

Perimeter of Semicircle = \\(\\pi r\\) + 2r = \\(r(\\pi + 2)\\)<\/p>\n<\/blockquote>\n

Rotating Wheels<\/strong><\/h4>\n
\n

(i) Distance moved by a wheel in 1 rotation = circumference of the wheel<\/p>\n

(ii) Number of rotations in 1 minute = distance moved in 1 minute\/circumference.<\/p>\n<\/blockquote>\n

Example<\/span><\/strong> : Find the circumference of the wheel of cycle’s whose diameter is 21 cm.<\/p>\n

Solution<\/span><\/strong> : We have, Diameter = 21 cm <\/p>\n

\\(\\implies\\)   Radius = \\(21\\over 2\\)  = 10.5 cm<\/p>\n

Circumference = \\(2\\pi r\\)  = \\(2 \\times {22\\over 7} \\times 10.5\\) = 66 cm<\/p>\n

Hence, the circumference of wheel of cycle is 66 cm<\/p>\n

Example<\/span><\/strong> : If the diameter of a semi-circular plot is 14 m, then find its perimeter.<\/p>\n

Solution<\/span><\/strong> : A semi-circle has been drawn with AB = 14 m as diameter.<\/p>\n

\\(\\therefore\\)  Its radius,     r = \\(d\\over 2\\) = \\(14\\over 2\\) = 7 m<\/p>\n

\\(\\therefore\\)   Perimeter of semi-circle of radius 7 m = \\(\\pi r\\) + 2r  = \\({22\\over 7} \\times 7\\) + \\(2\\times 7\\) = 36 m<\/p>\n

Hence, the required perimeter is 36 m.<\/p>\n\n\n

\n
Next – Area of a Circle and Semicircle \u2013 Formula & Examples<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Here you will learn what is the formula for circumference of circle (perimeter of circle) with examples. Let’s begin – What is Circumference ? The perimeter (boundary) of a circle is called its circumference. It is the distance covered by travelling once around circle. Formula for Circumference of Circle (Perimeter of Circle) Circumference of circle …<\/p>\n

Formula for Circumference of Circle (Perimeter) – Examples<\/span> Read More »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[63],"tags":[],"yoast_head":"\nFormula for Circumference of Circle (Perimeter) - Examples<\/title>\n<meta name=\"description\" content=\"In this post you will learn what is the formula for circumference of circle (perimeter of circle) with examples.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mathemerize.com\/formula-for-circumference-of-circle\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Formula for Circumference of Circle (Perimeter) - 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