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:

Step-by-step explanation:
Given

Required
Approximate to the nearest ten thousand
First, identify the digit at the ten thousand position
From the given numbers of visitors, the digit is 2.
So, the next digit (which is 7) will be approximated and added to 2.
7 > 5. So, 1 will be added to 2.
The number of visitors becomes:

The answer is 0.3 (1/3.)
Proof?
f(0.3) = 18(0.3) + 8
f(0.3) = 6 + 8
f(0.3) = 14
14 = 14
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