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Agata [3.3K]
3 years ago
10

The area of a circle is 201cm² . what is the diameter ?

Mathematics
2 answers:
lisabon 2012 [21]3 years ago
8 0

The answer is 16 cm approx.

Diameter= 2\sqrt{a/pi}

=>2\sqrt{201 / 22/7}

=>2\sqrt{201*7/22}

=>15.997.......

=> 16 approx

Hope this helps you!!

seraphim [82]3 years ago
5 0

Answer:

The diameter of the circle  is 16

Step-by-step explanation:

\pi = 3.14

Area = \pi r^{2} you will have to use this formula to find the radius

\pi r^{2} = 201   =   3.14r^{2}=201 (divide 3.14 into both sides)

\frac{3.14r^2}{3.14} = \frac{201}{3.14}   cross out 3.14 leaves you with r^2  and divide 201/3.14= 64.01

r^2 = 64.01\\r = \sqrt{64.01}\\r = 8  square root 64.01 which equals 8

Diameter = 2r    2(8) = 16

To check answer use Area formula \pi (8)^{2} = 201. 0619298

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