Use the conversion ratio 1 kilometer equals about 0.62 miles to solve this problem. A helicopter travels about 290 kilometers per hour. What is the helicopter's speed in miles per hour?
To convert kilometers to miles, we need to multiply the number of kilometers by the conversion ratio.
Therefore, the helicopter's speed in miles per hour would be:
290 kilometers/hour * 0.62 miles/kilometer = 179.8 miles/hour
Therefore, the helicopter's speed is approximately 179.8 miles per hour.