PSLE The perimeter of figure STUVW is (4
e + 10) cm. The perimeter of square STUV is 8 cm.
- Find the perimeter of triangle SVW in terms of e.
- The perimeter of figure STUVW is 46 cm. What is the value of e? Give your answer in cm.
(a)
Length of the square
= 8 ÷ 4
= 2 cm
Total lengths of ST, TU and UV
= 3 x 2
= 6 cm
Perimeter of triangle SVW
= 4
e + 10 - 2 - 2
= (4
e + 6) cm
(b)
4
e + 10 = 46
4
e = 46 - 10
4
e = 36
e = 36 ÷ 4 = 9
Value of
e = 9 cm
Answer(s): (a) (4
e + 6) cm; (b) 9 cm