Answer :
Coral reef grew = 3000 mm
- Convert to metres
Formula —
- divide the length value by 1000
[tex]\sf \longmapsto \: \dfrac{3000}{1000} metres[/tex]
[tex]\sf \longmapsto \cancel {\dfrac{3000}{1000}}{metres} [/tex]
[tex]\sf \longmapsto3 \: metres[/tex]