Question

http://prntscr.com/d8lpby

Answer 1

a+b

Answer 2

hints:
1. A diagonal of a rectangle is the line joining two non-adjacent vertices.
2. distance between two points, P1(x1,y1), P2(x2,y2)
\(D=\sqrt{(x2-x1)^2+(y2-y1)^2}\)
Substitute in the coordinates to get the answer.

Answer 3

Is it a^2??? @mathmate

Answer 4

Yea that is what he said

Answer 5

Oh okay

Answer 6

ur wel

Answer 7

@Gokuporter @justin234
Wait, the question needs a diagonal, so a^2 is not the answer.
you need to substitute the coordinates of two points of the figure, say P and R, which are not adjacent to each other.
The coordinates of
P(x1,y1)=(0,b)
R(x2,y2)=(a,0)
Substitute x1,y1,x2,y2 into the equation I posted earlier to get the answer.
and give the answer in terms of a and b.

Answer 8

really?