First of all you are going to want to google the way to solve that area of a triangle. Solve the triangles area. then find the area of the rectangle and add all of your answers to get the over all area.
10 pennies, 16 dimes, 19 nickles.
Sorry I'm not from US so I don't know your currency. Sorry about that. Hope what I have given you is enough. :)
Answer:
<h3>

= n + 3</h3>
Step-by-step explanation:
Each number increases by 3. Therefore, n+3.
Total surface area = lateral area of cone + lateral area of cylinder + area of base of cylinder:
cone: πrL = π(5cm)(13cm) = 65πcm²
cylinder: 2πrh = 2π(5cm)(12cm) = 120πcm²
base: πr² = π(5cm)² = 25πcm²
total surface area = 65πcm² + 120πcm² + 25πcm² = 210πcm²