80 ...........................
Pythagoras theorem is c^2 = b^2 + a^2
so when you plug in the numbers its 12^2 + 5^2 =169
which means 144+24=169
square root 169 = 13
AB =13 cm
hope this helps I tried my best. xx
Answer:
Step-by-step explanation:
Friends lunch=8+8+8=$32
Blake's lunch=$6
32+6=$40 total
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