Question
PSLE
The perimeter of figure JKLMN is (10 s + 11) cm. The perimeter of square JKLM is 20 cm.
  1. Find the perimeter of triangle JMN in terms of s.
  2. The perimeter of figure JKLMN is 81 cm. What is the value of s? Give your answer in cm.
3 m
(a)

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(b)

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PSLE
The perimeter of figure JKLMN is (10 s + 11) cm. The perimeter of square JKLM is 20 cm.
  1. Find the perimeter of triangle JMN in terms of s.
  2. The perimeter of figure JKLMN is 81 cm. What is the value of s? Give your answer in cm.