Answer:
It's D
Step-by-step explanation:
Stay frosty
The question says area of a square = 9 cm squared.
And they said if the sides are doubled in length what is the new length
so new length = 9 cm^2 × 9 cm^2
which should give you 81cm^2
therefore your answer should be = C
4/2=2+1=3x3=9+1=10/2=5+1=6/2=3+1=4/2