Oh no. Not significant digits! Yuck. I suppose since the area is specified with 0 decimal places, we should assume no rounding right? :)
My son the engineer and I have almost come to blows over this issue.
For a problem involving 2 significant digits, he would restate a length of 12,247 units as 12,000, and he would restate a length of one unit as 1.0.
I view this approach as indefensible in practical problem solving in matters such as baby blankets.