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Area of rectangle and square shapes

Problem

This picture has an area of 36 square centimeters. The height of the picture is 6 centimeters.
A curved bracket across the left side of the rectangle is labeled 6 centimeters. A curved bracket across the bottom side of the rectangle is labeled width.
What is the width of the picture?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
centimeters