Ashleytrashley
Ashleytrashley Ashleytrashley
  • 23-06-2017
  • Mathematics
contestada

The area of a pizza is 1386 centimeters. What is the radius?

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Tharindu
Tharindu Tharindu
  • 23-06-2017
πr2= 1386
21cm.......
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irspow
irspow irspow
  • 23-06-2017
Assuming that this is a circular pizza :P

The area of a circle is:

A=πr^2  divide both sides by π

A/π=r^2  take the square root of both sides

r=√(A/π), we are told that A=1386 so:

r=√(1386/π) cm

r≈21 cm  (to nearest hundredth of a centimeter)
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