Question

Look at this triangle, work out length of BC

Answer 1

≈ 10.25 cm

Explanation:

Pythagora

BC² = AB² - AC²

BC = √(13² - 8²)

= √(169 - 64)

= √105

≈ 10.25 cm

Answer 2

√105

Explanation:

The square value of hypotenuse is equal to sum of base and side length (sum their square)

13^2 = 8^2 + BC^2

169 = 64 + BC^2

105 = BC^2

BC = √105