neverlandsmoon
neverlandsmoon neverlandsmoon
  • 04-05-2018
  • Mathematics
contestada

what the answer is and how?

what the answer is and how class=

Respuesta :

Hershys
Hershys Hershys
  • 04-05-2018
so what we know is that 15 is the diameter

However the formula to find the area of a circle is A=[tex] \pi [/tex]r²
So to convert the 15 in diameter to a radius you have to do 15÷2,which is equal to 7.5

Now we know that the radius is 7.5.
So what we do now is A=[tex] \pi [/tex]7.5²
Then after we find what 7.5² is we get A=[tex] \pi [/tex]56.25
Then what we do is 3.14×56.25, because pi= 3.14.
So when we do 3.14×56.25, we get 176.625
So the answer is A= 176.6 in²

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