Answer:
≈ 904 m
Explanation:
We can use a right triangle to model the situation
the horizontal leg is 560, the vertical leg is 710, the height of the rocket and the hypotenuse is the distance from the observer to the ascended rocket.
using Pythagoras' identity in the right triangle.
the square on the hypotenuse is equal to the sum of the squares on the other 2 legs.
let d be the distance from the observer to the ascended rocket , then
d² = 560² + 710² = 313600 + 504100 = 817700
take the square root of both sides
d =
≈ 904 m ( to the nearest whole number )