Respuesta :
Answer:
Step-by-step explanation:
Let length of side = x
area = x²
so x² = 225 = 15²
then x = 15 units
Answer:
Formula for area of square;
A = a^2
where a represents the length of one side of the square, so;
A = a^2
given that the total area is 225,
225 = a^2
√225
= 15
