the base of an isoscels triangle is 4x long. the altitude to the base is 3x cm long. Find the length of one other side of the triangle

Answer 1

Half base = 4x/2=2x
altitude =3x
Half of an isosceles triangle is a right triangle, so use Pythagoras theorem to get
Other side = √((2x)^2+(3x)^2)
=(√13)x