Answer:
d. none of these
Step-by-step explanation:
Area of square= side ×side
Let x meters be the length of a side of the square.
Perimeter= 4(side)
4x= 40
<em>Dividing by 4 throughout:</em>
x= 40 ÷4
x= 10
Area of garden
= x²
= 10²
= 100m²
d
C