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A, B & C form a triangle where
∠
BAC = 90°.
AB = 13.5 mm and CA = 3.2 mm.
Find the length of BC, giving your answer rounded to 1 DP

please help, step by step explanation not needed just answer, rewarded with brainliest !!

Respuesta :

chrisreid1973

Answer:

13.9mm

Step-by-step explanation:

short story, pythagorean theorem a²+b²=c²

a=13.5

b=3.2

c=?

13.5² = 182.25

3.2² = 10.24

c² = 192.49

c = 13.8740765458

round to 1 decimal place c = 13.9

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