In a square of compost 4 ft by 4 ft. Ms. Lee had 1000 worms. How many worms can she have if her square of compost has a side lenght that is 8 times longer?

Answer 1

the area (and hence the number of worms) will grow as the square of the linear scale factor. That is, her square will have an area

8^2 = 64

times as big.