For number 2 it's would be 12.8
Sorry I don't have time for number 3
Answer:
Triangle DEF is not a right triangle ; possible lengths are 20 & 15
Step-by-step explanation:
For right triangle;
the sum of the square of the two adjacent sides must equal the square of the hypotenus.
Therefore, (6^2)+(11^2)≠(13^2).
the possible length are 20 & 15 because
(20^2)+(15^2)=(25^2)
If the length is x+5, the width would be x(x+5)=36
The answer must be C because since they are the SAME line, they must have the SAME slope
The missing length is 3.2 km
Area=LxW