Answer:
72
Step-by-step explanation:
8 + 10 x 2 = 36
15 + 3 x 2 = 36
36 + 36 = 72
72 cm
(8 + 10) x 2 + (15 + 3) x 2
= 2(18 + 18)
= 2(36)
= 72
