Question

1. Find the circumference of the circles with the following radius: (Take me =
22
7)
14 cm
(b) 28 mm
(c) 21 cm
Find the​

Answer 1

$\huge\underline\mathfrak\color{violet}Answer$

$a)\: 14cm \\radius = r =14cm \\ circumference = 2\pi \: r \\ = 2 \times 22\7 \times 14 \\ = 2 \times 22\1 \times 2 \\ = 44 \times 2 \\ = 88cm \\ \\ circumfernce \: of \: the \: circle \: is \:88cm$

$b) \: 28mm \\ radius = r = 28mm \\ = 2 \times 22\7 \times 28 \\ = 2 \times 22 \times 4 \\ = 44 \times 4 \\ = 176cm \\ \\ circumference \: of \: circle \: is \: 176mm$

$c) \: \: 21cm \\ \\ radius = r = 21cm \\ circumference = 2\pi \: r \\ = 2 \times 22\7 \times 21 \\ = 2 \times 22 \times 3 \\ 44 \times 3 \\ = 132cm \\ \\ circumference \: of \: the \: circle \: is \: 132cm$

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Answer 2

Answer:

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Explanation:

Circumference of the circle is 132 cm

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