Question

plz answer my question fast

Answer 1

let the side be x


so base = x-5



now,

2x=4(x-5)


solving for x


x=10

Answer 2

let the one side be x
and in an isosceles triangle both sides are equal.
by this the base 5-x
and give that 2x = 4(5-x)
2x=20x
20/2= x
x= 10
As the side of isosceles triangle is 10
then base will be;10-5 = 5