PSLE The perimeter of figure RSTUV is (8
h + 24) cm. The perimeter of square RSTU is 24 cm.
- Find the perimeter of triangle RUV in terms of h.
- The perimeter of figure RSTUV is 88 cm. What is the value of h? Give your answer in cm.
(a)
Length of the square
= 24 ÷ 4
= 6 cm
Total lengths of RS, ST and TU
= 3 x 6
= 18 cm
Perimeter of triangle RUV
= 8
h + 24 - 6 - 6
= (8
h + 12) cm
(b)
8
h + 24 = 88
8
h = 88 - 24
8
h = 64
h = 64 ÷ 8 = 8
Value of
h = 8 cm
Answer(s): (a) (8
h + 12) cm; (b) 8 cm