Explination: A^2+B^2=C^2 A=3.9 B=? C=11 (3.9)^2 + B^2= (11)^2 3.9^2=15.21 C^2=121 15.21 + b^2= 121 solve for B^2 15.21 +B^2 = 121 Subtract 15.21 from both sides to seclude the variable. 121-15.21=105.79 Now you're gonna take the square root of both sides
