a-tunnel-is-shaped-like-a-parabola-with-a-base-width-of-800-and-nbspft800text-ft

Question

A tunnel is shaped in a form of a parabola with a base width of 800 ft800	ext{ ft} and a maximum height of 600 ft600	ext{ ft}. Its cross-section can be modeled by y=600(1−(x400)2) y = 600 \left( 1 - \left( \frac{x}{400} \$$right)^2$$ ight) . What is the average height of the tunnel above the ground?

Accepted Answer

400 ft400	ext{ ft}

Answer

8003 ft\frac{800}{3}	ext{ ft}

Answer

1200 ft1200	ext{ ft}

Answer

800 ft800	ext{ ft}