Question

find the diameter of a circle whose circumference is 22cm​

Answer 1

$circumference = 2\pi \: r$

$22 = 2 \times \frac{22}{7} \times r$

$\frac{22}{2} \times \frac{7}{22} = r$

$r = \frac{7}{2}$

$r = 3.5 \: cm$

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Answer 2

Answer:

14/4

Step-by-step explanation:

2πr=22

2 x 22/7 x r = 22

r =22/7×22/2

r = 7/2

d = 2r

d = 7/2 x 2

14/4

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