PSLE The perimeter of figure TUVWX is (7
c + 17) cm. The perimeter of square TUVW is 8 cm.
- Find the perimeter of triangle TWX in terms of c.
- The perimeter of figure TUVWX is 52 cm. What is the value of c? Give your answer in cm.
(a)
Length of the square
= 8 ÷ 4
= 2 cm
Total lengths of TU, UV and VW
= 3 x 2
= 6 cm
Perimeter of triangle TWX
= 7
c + 17 - 2 - 2
= (7
c + 13) cm
(b)
7
c + 17 = 52
7
c = 52 - 17
7
c = 35
c = 35 ÷ 7 = 5
Value of
c = 5 cm
Answer(s): (a) (7
c + 13) cm; (b) 5 cm