Question

What is the length of side AB? Round your answer to the nearest tenth.

Answer 1

AB ≈ 2.8 units

Explanation:

Calculate the length using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = A(1, 1) and (x₂, y₂ ) = B(3, 3)

AB =
`√((3-1)^2+(3-1)^2)`

=
`√(2^2+2^2)`

=
`√(4+4)`

=
`√(8)` ≈ 2.8 units ( to the nearest tenth )