BC = 20
A. ) 20
Step-by-step explanation:
AB = 12
AC = 16
BC = ?
Pythagoras theorem
AB² + AC² = BC²
12² + 16² = BC²
144 + 256 = BC²
400 = BC²
BC = √400
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step-by-step explanation:
you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.