24^2+b^2=40^2 B is the unknown leg so we have to figure that out by plugging in what we know into the format a^2+b^2=c^2 Which is 24^2+b^2=40^2 So 24^2=576 And leave the b^2 Then 40^2=1600 Your new equation is 576+b^2=1600 Subtract 576 from both sides so you get b^2=1,024 to find b you find the square root of 1,024 to get b by itself which now gives you b=32 this means that the length of the other leg is 32.0. Hope this helps! :)