The scale of his model to the actual car is 1:10 is model is 16 1/2 inches long how long is the actual car

165 inches, or 13 feet and 9 inches

Step-by-step explanation:

Because the ratio of the model to the actual car is 1:10, you know that the actual car is ten times bigger than the model. You can multiply the length of the model by ten to get the length of the actual car with this information.

16.5 x 10 = 165 inches

If you're being asked to convert to feet, do so by dividing by twelve and taking the remainder as your remaining inches.

165 / 12 = 13 r 9, meaning 13 feet and 9 inches

Let me know if you need more of an explanation for anything!

37.7 (approx.)

Step-by-step explanation:

The radius of the biggest circle is 3+2=5. And so the area is . In the same way, the area of the two small circles are and

So, the area of shaded region = Area of the biggest circle - (area of small two circles)