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6) 2(15+30) = 90cm
8) (6x2) + (12x2) + (25x2) + 30 + (30-6x2) = 12 + 24 + 50 + 30 + 18
= 134 cm [answer.2.content]
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8) (6x2) + (12x2) + (25x2) + 30 + (30-6x2) = 12 + 24 + 50 + 30 + 18
= 134 cm [answer.2.content]