Hexagonal tiles of side 20 cm are used to tile a room which measures 6.25 m by 4.85 m. Assuming we complete the edges by cutting up tiles, how many tiles are needed?

Respuesta :

Answer: 292 tiles

Step-by-step explanation:

To find the number of tiles needed , we need to know the area of the hexagonal tiles and also the area of the room.

Area of hexagon

The area of hexagon is given as :

Area = [tex]\frac{3\sqrt{3}}{2}[/tex][tex]a^{2}[/tex]

Where a is the length of side.

Therefore:

A = [tex]\frac{3\sqrt{3}}{2}[/tex][tex]20^{2}[/tex]

A = [tex]\frac{3\sqrt{3}}{2}[/tex] X 400

A = (400 x 3 x [tex]\sqrt{3}[/tex]) / 2

A = [tex]\frac{2078.460969}{2}[/tex]

A = 1039.23[tex]cm^{2}[/tex]

Also to find the area of the room , we must first convert from m to cm

6.25 m = 6.25 x 100 cm

6.25m = 625 cm

4.85m = 485cm

Therefore: Area of the room  = length x breadth

Area = 625 x 485

Area = 303125[tex]cm^{2}[/tex]

Therefore , the number of tiles needed = area of the room / area of hexagon

Number of tiles = 303125/ 1039.23

N = 291.6823032

Therefore , the number of tiles needed ≈ 292

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