Hi,

I have this problem that I can't figure out. I've had quite a few attempts, but am really not sure where I'm going wrong. It's a simple question, so I'm sure it's something silly I'm doing...

Anyway,

A flash flood left a 200 hectare property ankle deep (100 mm) in water. How much water is this in mega litres? (1 hectare = 100m x 100m. 1 litre = 1000 cm^{3})

So, if 1 hectare = 100m^{2}, then 200 hectare = 20,000m^{2}.

Based on this, to determine the volume of water, we could multiply the area by the height of the water - 100mm, or 0.1m. 20,000m^{2}* 0.1m = 2,000m^{3}.

I now have to convert this to litres, and by knowing that 1L = 1cm^{3}, I should convert m^{3}to cm^{3}. 1 m3 = 1,000,000cm^{3}, so 2,000m^{3}= 2,000,000,000cm^{3}.

Now, if 1 L is equal to 1000cm^{3}, then 20,000,000,000cm^{3}= 2,000,000L.

Then, if 1 Megalitre = 1,000,000 L, then 2,000,000L = 2 megalitres.

However, according to the quiz sheet, this is incorrect...Could someone please explain?

,