If a and b are the length of the side of a triangle whose hypotenuse is 20 and whole area is 40 then what is the value of (a + b)2?
1
460
2
360
3
470
4
560
If a and b are the length of the side of a triangle whose hypotenuse is 20 and whole area is 40 then what is the value of (a + b)2?