Help!!!!!!!!!!!!!!!!!!!

Answer:
Perimeter of base: 36ft
Height: 15ft
Base area: 50ft
Surface area: 640ft
Step-by-step explanation:
Perimeter of base:
The perimeter is just the line that circles the base. It doesn't include what's inside the line. By that logic:
Perimeter = 16ft + 10ft + 10ft = 36ft
Height:
This can be directly derived from the diagram. Height = 15ft.
Base area:
The formula for the area of a triangle is [tex]\frac{1}{2\\}[/tex] x base x height.
Area of triangular base = 1/2 x 10ft x 10ft = 50ft
Surface area:
The surface area is the area of all exposed sides of the figure.
Surface area = (50 x 2) + (16 x 15) + 2(15 x 10) = 640ft
50 x 2 - The surface area for both exposed triangles.
16 x 15 - The surface area of the surface facing us.
2(15 x 10) - The surface area of the sides of the figure (They're identical).