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What is the area W. Please help geometry
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What is the area W. Please help geometry

What is the area W. Please help geometry-example-1
User Dujianchi
by
3.3k points

1 Answer

1 vote

Answer:

C. 9π

Explanation:

r=x-1

A=πr^2

--------

  • (x-1)^2+(2x-4)^2= (x-1+2)^2
  • x^2-2x+1+4x^2- 16x+16= x^2+2x+1
  • 4x^2 -20x +16=0
  • x^2-5x+4=0
  • (x-1)(x-4)=0
  • x=1 - not possible as radius can't be zero
  • x=4 is the solution

--------

A= πr^2= π*(4-1)^2= 9π, option C.

User Max Weinzierl
by
4.2k points
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