PSLE The perimeter of figure KLMNP is (4
s + 16) cm. The perimeter of square KLMN is 16 cm.
- Find the perimeter of triangle KNP in terms of s.
- The perimeter of figure KLMNP is 52 cm. What is the value of s? Give your answer in cm.
(a)
Length of the square
= 16 ÷ 4
= 4 cm
Total lengths of KL, LM and MN
= 3 x 4
= 12 cm
Perimeter of triangle KNP
= 4
s + 16 - 4 - 4
= (4
s + 8) cm
(b)
4
s + 16 = 52
4
s = 52 - 16
4
s = 36
s = 36 ÷ 4 = 9
Value of
s = 9 cm
Answer(s): (a) (4
s + 8) cm; (b) 9 cm