Question

if a diameter of a circle is 28 cm .find its circumference​

Answer 1

Step-by-step explanation:

Radius = Diameter/2

Radius = 28/2 = 14

Circumference = 2πr = 2×22/7×14 = 2×22×2 = 88

Circumference of the circle is 88cm.

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Answer 2

Answer:

d = 28 cm

$r = \frac{d}{2} = \frac{28}{2} \\ \\ = 14 \: cm$

Circumference of circle =

$2 \: \pi \: r \\ \\ = 2 \times \frac{22}{7} \times 14 \\ \\ = 2 \times 22 \times 2 \\ \\ = 88 \: cm$

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