The roof of a tunnel is a semi-deck, if the tunnel is 100 m wide and the maximum height from floor to ceiling is 90 m, determine the height at 20 m and 45 m from the center. Knowing that the side walls on which the semi-elliptical roof rests have a height of 50 m 90 m 100 m

A tunnel connecting two portions of a space station has a circular cross-section of radius 34 feet. Two walkway decks are constructed in the tunnel. Deck A is along a horizontal diameter and another parallel Deck B is 2 feet below Deck A. Because the space station is in a weightless environment, you can walk vertically upright along Deck A, or vertically upside down along Deck B. You have been assigned to paint "safety stripes" on each deck level, so that a 6 foot person can safely walk upright along either deck. Determine the width of the "safe walk zone" on each deck. Deck A --> x-axis Deck B (a) Cross-section of tunnel. Deck A Deck B- = Safe walk zone (b) Walk zones. Deck A has a "safe walk zone" of feet. Deck B has a "safe walk zone" of feet Question Help: D Post to forum 1O Chp esc @ 2$ % & 3

A rectangular plot of farmland will be bounded on one side by a river and on the otherthree sides by a single-strand electric fence. With 800 m of wire at your disposal, what isthe largest area you can enclose?

A landowner has 1200 ft of fencing material with which to enclose a rectangular space immediately next to a building wall. If the building wall does not require any fencing along that edge, what is the largest area that can be enclosed?   Maximum area:                   (sq. ft)Length parallel to building wall:          (ft)Length perpendicular to building wall:        (ft)