Answer:
The first Graph
Step-by-step explanation:
its not the third because it's a dotted line, so it wouldn't be equal to. it's not the second because it's shaded in the wrong place, making it less than.
Answer:
Sum of diagonals = 20 units
Step-by-step explanation:

To find: Sum of diagonals




Let the diagonals of the rectangle be 
Diagonals of a rectangle are equal in measure.

(By Pythagoras Theorem)







Now, usually about 1 ruler is the length of a piece of paper. But this all depends on the paper. It'd be a safe bet to say 1.
Answer:
4.8 m
Step-by-step explanation:
Lamar 1.6
Joe 1.2
Kim 0.8+1.2 = 2
1.6 + 1.2 + 2 = 4.8 m
6.66666667 should be your answer...probably should round it though