32
Answer:
P= 4+4+16=24 units
Explanation:
The triangle is isosceles so <B is congruent to <C. So you can set the measures of these to angles equal to each other and solve for x.
x+6 = 2x -20
26 = 2x-x
26=x
so the measure of <B is 6+26=32
the measure of <C is 2 (26)-20 =32
m<B= 2(BC)
32 = 2(BC)
32 = BC
2
16=BC
m<C=8(AB)
32=8(AB)
32 =(AB)
8
4 =AB
Since the triangle is isosceles AC will also be four.
P= 4 +4+16
P=24 unit