Answer:

Step-by-step explanation:
Given

Required
Write in form of 

Apply law of indices:

Reorder

Express
at 27


Rewrite as:

Express
as 9


SA=2(3.14)(4)² + 2(3.14)(4)(9)
SA=2(3.14)(16) + 2(3.14)(36)
SA=(6.28)(16)+(6.28)(36)
SA=100.48+<span>226.08
SA=</span><span>226.08</span>
Area of trapezoids = (base 1 + base 2) × (height ÷ 2)
(15.2 + 11.2) × (8.4 ÷ 2) = 110.88
The area is 110.88 feet²
The answer to the radius is 3 hope it I helped