Question

The legs of an isosceles triangle are 5 units long, and the altitude to the base is 4 units long find the length of the base.

Answer 1

Convert the isosceles triangle into 2 right triangles by dropping a line from vertex to base. You now have a right triangle with hypotenuse = 5 and a leg =4.
\[C^2=A^2+B^2\]
will let you find half of the base length.
C = 5
A = 4
B = 1/2 length of base

Answer 2

the length of the base is 6 then

Answer 3

is that right?

Answer 4

That's what I have