We have:
4 triangles with the base b = 5ft and the height h = 6ft
4 rectangles with the lenght l = 5ft and the width w = 4ft
1 square with side a = 5ft.
The formula of an area of a riangle:

Substitute:

The formula of an area of a rectangle:

Substitute:

The formula of an area of a square:

Substitute:

The Surface Area of composite solid:

Substitute:

<h3>Answer: The Surface Area of the composite solid is 165 ft².</h3>
Answer:
20/50
Step-by-step explanation:
i think
Answer:
ummmmmmmmm hard to say
Step-by-step explanation:
Are equation for a rectangle is area = (width x length)
(18x - 12) = 6 x length
length = (18x - 12) / 6
length = 3x - 2