Answer:
18 cm²
Step-by-step explanation:
Base * half height says 6*6/2 = 18.
The trick is to put the 90° angle at the base (rotate the triangle).
Area of a triangle =1/2×b× h
You can only find the 90° angle opposite the longest side of the triangle.
1/2×(6×6)cm
= 1/2×36cm
=36cm²/2
=18cm²
