Question

see image help me as fast as possible, please

Answer 1

Answer:

39

Step-by-step explanation:

to find the area of the triangles use the equation

3(5)(.5)=7.5

since we have 4 triangles, multiply that by 4, which equals 30

Now find the area of the square

3(3)=9

Now add the area of the square and the area of the triangles

Answer 2

Answer:

39 km

Step-by-step explanation:

Surface area=area of square +area of triangles

=3*3 + 0.5*3*5*4

=39

(4 triangles)