PLZ HELP WILL RATE BRAINLIEST

Answer:
877.5 cm²
Step-by-step explanation:
Altogether, the area is that of 12 triangles of base 13 cm and height 11.25 cm. The total area will be ...
star area = 12×triangle area = 12×(1/2)(13 cm)(11.25 cm)
star area = 877.5 cm²