gabbyalicorn
  • gabbyalicorn
A circular piece of metal has a radius of 3.5 meters. The metal sells for $3.25 per square meter. What is the total cost of the circular piece of metal? A. $11.38 B. $38.47 C. $71.44 D. $125.01
Mathematics
jamiebookeater
  • jamiebookeater
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gabbyalicorn
  • gabbyalicorn
triciaal
  • triciaal
square meter is the unit for area the area of a circle is pi*r^2 given r = 3.5 and using pi as 3.14 find the area let the area = x one unit of area sells for 3.25 so x units of area sells for 3.25*x
gabbyalicorn
  • gabbyalicorn
so 3.14 x 3.5 (which is actually 12.25)

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triciaal
  • triciaal
|dw:1433304725853:dw|
gabbyalicorn
  • gabbyalicorn
|dw:1433304846445:dw|
triciaal
  • triciaal
|dw:1433304852799:dw|
triciaal
  • triciaal
area = pi * r^2
gabbyalicorn
  • gabbyalicorn
38.465
gabbyalicorn
  • gabbyalicorn
Thank you @triciaal! And also, i feel bad about what happend yesterday please forgive me, im sorry.

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