a²+b²=10²
a²+b²=100
Therefore, since no a and b are given, think of a factor than when the square of the sum of a and b is 100.
1.if a=8, b=6; same as if b=8, a=6
A=1/2(8)(6)
A=24
2.if 5 and 5√3
A=1/2(5)(5√3)
A=25√3/2 or 21.65
3.if 9 and √19
A=1/2(9)(√19)
A=19.62
Well, since the values of 8 and 6 are pretty much more maximum or higher than the others, well a=8 or 6 and b=6 or 8. Hope this helps =)
so its like (a,b):(8,6) and (6,8)