JAMB Mathematics 2021 Paper

The diagonal of a rhombus is a line segment that joins any two non-adjacent vertices.

A rhombus has two diagonals that bisect each other at right angles.

i.e this splits 6cm into 3cm each AND 8cm to 4cm

Using Hyp$^2$ = adj$^2$ + opp$^2$

Hyp$^2$ = 3$^2$ + 4$^2$

Hyp$^2$ = 25

Hyp = 5

∴ Length (L) is 5cm because a rhombus is a quadrilateral with 4 equal lengths