SOLUTION: A rancher in Centreville decides to build a silo inside his corral. The rectangular corral measures 23 m by 18 m and the silo's base is circular with a diameter of 2x meters. Find

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Question 298873: A rancher in Centreville decides to build a silo inside his corral. The rectangular corral measures 23 m by 18 m and the silo's base is circular with a diameter of 2x meters. Find a polynomial for the remaining area of the corral (in square meters) after the silo is built.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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A rancher in Centreville decides to build a silo inside his corral.
The rectangular corral measures 23 m by 18 m and the silo's base is circular
with a diameter of 2x meters.
Find a polynomial for the remaining area of the corral (in square meters) after the silo is built.
:
r = x meters
:
f(x) = %2823+%2A+18%29+-+%28pi%2Ax%5E2%29
:
f(x) = 414+-+%28pi%2Ax%5E2%29
:
f(x) = 414 - 3.14x^2