PSLE The perimeter of figure UVWXY is (7
h + 11) cm. The perimeter of square UVWX is 8 cm.
- Find the perimeter of triangle UXY in terms of h.
- The perimeter of figure UVWXY is 60 cm. What is the value of h? Give your answer in cm.
(a)
Length of the square
= 8 ÷ 4
= 2 cm
Total lengths of UV, VW and WX
= 3 x 2
= 6 cm
Perimeter of triangle UXY
= 7
h + 11 - 2 - 2
= (7
h + 7) cm
(b)
7
h + 11 = 60
7
h = 60 - 11
7
h = 49
h = 49 ÷ 7 = 7
Value of
h = 7 cm
Answer(s): (a) (7
h + 7) cm; (b) 7 cm