Question

What would the answer be

Answer 1

28.28

Explanation:

Using Pythagoras' identity on the right triangle

d² = 20² + 20² ← Pythagoras' identity

= 400 + 400 = 800 ( take the square root of both sides )

d =
`√(800)` ≈ 28.28 ( to 2 dec. places )