Question

Ques. The area of a circle is 1386sq. cm Find its diameter and circumference.
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Answer 1

Answer:

Diameter of circle =132cm

Circumference of circle =414cm

Step-by-step explanation:

Given :

Area of circle =1386cm²

To find :

1.Diameter

2.circumference

Solution :

$area \: of \: circle = \pi {r}^{2}$

$1386 = \frac{22}{7} \times {r}^{2}$

r = 66cm

Diameter =2r

Diameter of circle =132cm

$circumrence \: of \: circle = 2\pi \times r$

$= 2 \times \frac{22}{7} \times 66$

=414cm

Circumference of circle circle=414cm

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