Answer:
B. 14 +7√2
Step-by-step explanation:
The lengths of the two legs are the same: 7.
The length of the hypotenuse is √2 times the length of a leg, so is 7√2.
The perimeter is the sum of the lengths of the sides:
P = 7 + 7 + 7√2
P = 14 +7√2 . . . . . matches choice B
