-6^2=36 I’m stuck what’s the answer

Question 3 of 30 paul buys fruit to make smoothies. he buys 3.78 pounds of apples, 2.12 pounds of peaches, and 4.45 pounds of oranges. paul rounds each weight to the nearest tenth of a pound. about how many pounds of fruit did paul buy? (a) 10.5 pounds (b) 10.2 pounds (c) 10.4 pounds (d) 10.0 pounds 30 points

Me because some of question i don’t understand

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.