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Reika [66]
2 years ago
6

Calculate the area of a circle with a diameter of 6cm

Mathematics
2 answers:
USPshnik [31]2 years ago
7 0
Formula for area of circle:
A=πr²
Here diameter, d= 6 cm
Radius, r= d/2 = 6/2 = 3 cm
Put values
A= 3.14 x 3²
A=3.14 x 9
A=28.26 cm²

Answer: 28.26 cm²

UkoKoshka [18]2 years ago
4 0
Hey there!

We'll do it in terms of Pi, as a variable, and in terms of pi as 3.14

We know that since the diameter is from one side to the other in a circle, dividing it by 2 will give you the radius - the distance to the middle. We plug in this radius to our area formula:

a = \pi (r^2)
a = \pi (3^2)
a = 9\pi

If our area is 9 pi, we can multiply 9 by 3.14 to get an approximate value:

A = 3.14(9)
A = 28.26

Hope this helps!
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