+129852 First one
Orginal perimeter = 2 ( 12 + 17)
New perimeter = 2 ( 12*12 + 12*17) = 2 ( 12 (12 + 17) ) = 12 * 2 (12 + 17)
So....the perimeter is increased by a factor of 12
Second one
hypotenuse = sqrt ( leg1 ^2 + leg2 ^2 ) =
sqrt (15^2 + 25^2 ) =
sqrt ( 225 + 625) =
sqrt ( 850) = 29.15 ft
