Question
The area of a rectangular sheet of paper CDEF is 42 cm2. It is then folded at a corner as shown below in Figure 2. Given that CF = 6 cm and CG = 3 cm.
  1. Find the length of EF.
  2. Find the perimeter of the unshaded part CGDEF.
3 m
(a)

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(b)

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The area of a rectangular sheet of paper CDEF is 42 cm2. It is then folded at a corner as shown below in Figure 2. Given that CF = 6 cm and CG = 3 cm.
  1. Find the length of EF.
  2. Find the perimeter of the unshaded part CGDEF.