Question

find perimeter of a circle with diameter 8.4 metre​

Answer 1

Given diameter = 8.4 m.

We know that radius = diameter/2.

So,

r = 8.4/2

 = 1.2 m

Then,

Perimeter of circle

=> 2 π r

=> 2 * (22/7) * 1.2

=> 7.54 m

Hope it help!

Answer 2

Answer:

30.8 m2

Step-by-step explanation:

circumference of circle=2*22/7 *radius

= 2*22/7*8.4/2

=2*11*1.2

=22*1.2

=26.4 answer

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