Answer: A. Global Positioning Satellite (GPS) and two-way radio
The two instruments that were used and that were made navigation convenient and easier in 1990s are the GPS and the two-way radio. GPS is a tracking system using Global Navigation Satellite System.
Answer:
Answer:
85t
Step-by-step explanation:
1. Volume of a cone: 1. V = (1/3)πr2h 2. Slant height of a cone: 1. s = √(r2 + h2) 3. Lateral surface area of a cone: 1. L = πrs = πr√(r2 + h2) 4. Base surface area of a cone (a circle): 1. B = πr2 5. Total surface area of a cone: 1. A = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2))
hope this helps
Explanation:
Niccolo was the author. Just google it :3