A and C are irrational.
We know that B is rational because it's just asking 8 - 5, which is 3.
There is, however, no perfect square root of 73 or 56, and so the answer will be irrational.
3* (1 3/4)
= 3* (7/4)
= 21/4
= 5.25
Hope this would help~
ABFE =10•5=50
BFGC = 5•5=25
EFGH = 10•5=50
