PSLE The perimeter of figure VWXYZ is (5
h + 24) cm. The perimeter of square VWXY is 12 cm.
- Find the perimeter of triangle VYZ in terms of h.
- The perimeter of figure VWXYZ is 49 cm. What is the value of h? Give your answer in cm.
(a)
Length of the square
= 12 ÷ 4
= 3 cm
Total lengths of VW, WX and XY
= 3 x 3
= 9 cm
Perimeter of triangle VYZ
= 5
h + 24 - 3 - 3
= (5
h + 18) cm
(b)
5
h + 24 = 49
5
h = 49 - 24
5
h = 25
h = 25 ÷ 5 = 5
Value of
h = 5 cm
Answer(s): (a) (5
h + 18) cm; (b) 5 cm