Because of​ Earth's curvature, a person can see a limited distance to the horizon. The higher the location of the​ person, the farther that person can see. The distance D in miles to the horizon...

Question

can be estimated by D(h) = 1.22 times square root h, where h is the height of the person above the ground in feet. Find D for a 3-foot tall person standing on level ground.

For a 3 foot tall person standing on level ground, D is about blank miles. (Round to the nearest integer as needed). Is it 0.7? Or 0.704 miles?

The second part of the questions I don't know how to do either. How high does a person need to be to see 40 miles? Do not round until the final answer. Then round to the nearest foot as needed.

Answer 1

D(3) = 1.22(√3)

40 = 1.22(√h)

Use a calculator for both.