Question

A, B & C form a triangle where ∠ BAC = 90°. AB = 6 mm and CA = 7.3 mm. Find the length of BC, giving your answer rounded to 1 DP.

Answer 1

BC ≈ 9.5 mm

Explanation:

Since, ΔBAC is a right angle triangle,

By applying Pythagoras theorem in the given right triangle,

(Hypotenuse)² = (Leg 1)² + (Leg 2)²

BC² = AB² + AC²

BC² = 6² + (7.3)²

BC =
`√(89.29)`

BC =

BC = 9.445

BC ≈ 9.5 mm