The answer is 5,000!!!!!!!!!!!!!!!!!!!!!!!
90^2+120^2=c^2
180+240=c^2
420=c^2
2 radical 105
I am not too sure whether there were options, but one way to approach this is to fill it with "multiplication" and "addition" - the distributive property combines addition and multiplication to make multiplying whole numbers simpler.
The gain is that you don't have to make one difficult multiplication, but a couple of simpler ones and then you can add them up.
I think it is 0.3KL
hope it helps
