Find the length of the longest straight line which can be drawn on a rectangular board which measures 2.2m by 1.2m

Answer 1

The longest straight line in this case is given by the diagonal of the rectangle.
You can find its length by using the Pythagorean theorem.

x^2 = (2.2)^2 + (1.2)^2

Solve for x.

Answer 2

I don't understand

Answer 3

Please work it out
..I failed

Answer 4

please I don't understand