Respuesta :
					                   You have to use the formula of Pythagoras
leg (call it AB) = √hypotenuse²-leg₁² = √20²-15² = √400-225 = √175 ≈ 13,22 inches
					                
					             leg (call it AB) = √hypotenuse²-leg₁² = √20²-15² = √400-225 = √175 ≈ 13,22 inches
					                   You can use the pythagorean theorem to solve this. To the nearest tenth, it is 13.23inches because 5 radical 7 is 13.228.
					                
					                
					              
													