Question

A, B & C form a triangle where ∠ BAC = 90°.
AB = 9.4 mm and CA = 8.9 mm.
Find the length of BC, giving your answer rounded to 1 DP.

BC =  mm

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Answer 1

Answer:

12.9

Step-by-step explanation:

To solve this, you need to use the Pythagorean Theorem: a² + b² = c²

Substituting the numbers into the formula:

(9.4)² + (8.9)² = c²

(88.36) + (79.21) = c²

167.57 = c²

12.9 ≈ c

Answer 2

Answer:

12.9

Step-by-step explanation: