the length of one leg of an iscosceles right triangle is 3 ft. What is the perimeter of the triangle?

3 (2 + sqrt (2)) ft (exact)

10.2 ft (3sf)

Step-by-step explanation:

Length of the hypotenuse:

hypotenuse² = 3² + 3² = 18

hypotenuse = sqrt (18) = 3sqrt (2)

Perimeter = 2 (3) + 3sqrt (2)

= 3 (2 + sqrt (2))

= 10.2 (3sf)