require
'mathn'
puts
"random name"
puts
"random name"
puts
" "
puts
"The program calculates the hypotenuse."
puts
"Input a:"
a =
gets
.
to_i
puts
"Input b:"
b =
gets
.
to_i
c =
Math
.
sqrt
(
a
*
a
+
b
*
b
)
puts
"hypotenuse c: "
+
c.
to_s
gets