Respuesta :

Steven would be 10.78cm tall.

Answer:

If Steven is 9cm. taller than 1.78cm(Terry) Steven is 10.78cm tall.

Step-by-step explanation:

This is a simple additions equation.

9cm. or 9.00cm.+1.78cm.=10.78cm.

I hope that this answer was useful, have a good day.