Answer:
35.5 cm
Step-by-step explanation:
The perimeter (P) is calculated as
P = (2 × 6.75 ) + (2 × )
= 13.5 + (2 × 11) = 13.5 + 22 = 35.5 cm
49
(351-8)/7 = 49
7 1/2 hours I believe is the correct answer. Hope it works!