Answer:
229.41
Explanation:
Well you need to multiply 11.3 times 4.5 per each triangle
Also you need to find the base which is a square
So 5.1 times 5.1 which is technically 5.1 squared. You add from there
EQUATION: 4(11.3 x 4.5) + 5.1 squared
You should get 229.41