How much glass is needed to construct a hexagonal (6-sided) fish tank? The tank is 4 feet tall and each pane is 11 feet wide. The tank's bottom is not made of glass.

Each side of the hexagon is a rectangle of height 4ft and width 11ft.

The area of each one of these rectangles is:

A = 4ft*11ft = 44ft^2

And a hexagon has 6 faces, so the fish tank will have 6 of these rectangles, then the total area is:

area = 6*44ft^2 = 264 ft^2

We know that the base of the hexagon is not made of glass, but we do not know if the top is made of glass or not.

In the case that the top is not made of glass, the amount of glass needed is 264 ft^2

If the top is made of glass, then we need to add the area of a hexagon of side 11 ft, which is:

a = (3*√3)*(11ft)^2/2 = 314.4ft^2

Then the total area in this case is:

264 ft^2 + 314.4ft^2 = 578.4 ft^2

This is the total amount of glass needed to construct the tank if the top of the tank is made of glass.

on friday there were 15 birds

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m