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Answer:
3a) 110mm squared 3b) 800in squared
Explanation:
3a) A=lw A=5x6 A=30 30x3=90
A=1/2xbxh A=1/2x5x4 A=2x5 A=10 10x2=20
90+20=110mm squared
3b) A=lw A=16x16 A=256
A=1/2xbxh A=1/2x16x17 A=8x17 A=136 136x4=544
256+544=800in squared
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