A, B & C form a triangle where angle BAC =90 degrees.
AB=11.6 mm and CA = 4 mm.
find the length of BC, giving your answer rounded to 1DP.
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Step-by-step explanation:
Triangle ABC is a right angled triangle.
right angles at B
by Pythagoras theorem,
BC2=AB2+AC2
=(11.6)2+(4)2
=134.56+16
=150.56
BC=12.2 mm
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