A right triangle has a hypotenuse that measures 41 ft and one side that measures 40 ft. what is the length of the remaining side of the triangle?

a. b. 13 ft

c. 11 ft

d. 9 ft

In a right triangle, use Pythagoras theorem

hypotenuse ^2 = (short leg) ^2 + (long leg) ^2

(short leg) ^2 = hypotenuse^2 - (long leg) ^2

=41^2-40^2

= 1681-1600

= 81

short leg = sqrt (81) '

=9'