If it's an equilateral triangle than all the sides are the same. So 20 would be the base. Multiply 20 by 3, which is 60.
26*$1334=34,684
19*$749=14,231
$34,684
+$14,241=48,915
Answer:
Step-by-step explanation:
The right side of the identity
which is the same as the left side of the identity