Answer:
The actual length of the helicopter is 23 feet.
Explanation:
Given:
On a scale drawing, a helicopter is 2.3 feet long.
The scale on the drawing shows a ratio of 1 foot to 10 feet.
Now, to find the actual length of the helicopter.
Let the actual length of helicopter be
.
On scale drawing length of helicopter = 2.3 feet.
The scale on the drawing shows a ratio = 1:10.
Now, as ratios are given so by setting proportion we solve it:

By cross multiplying we get:
⇒

⇒

⇒

Therefore, the actual length of the helicopter is 23 feet.