Question

Mrs. Brown wants to cover a wall 3 m high and 1 m 50 cm wide, with square granite tiles. Each side of a square granite tile is 10 cm long.

How many tiles should she buy if she wants to put tiles only along the boundary of the wall? (Draw figure if neccessery)

Answer 1

Given,

The height of wall = 3m

The width of wall = 1m 50cm

Length of each sides of granite tile = 10cm

To find,

The number of tiles needed to cover the boundary of the walls.

Solution,

We can simply solve this mathematical problem by using the following mathematical process.

Height of wall = 3 m = 300 cm

Tiles needed in length wise boundary = Height of wall / length of side of tile = 300/10 = 30

There are two boundaries along the height.

Total tiles along the height = 30×2 = 60

Width of wall = 1m 50cm = 150cm

Width of wall without tile application = 150-(2×10) = 130 cm [The four corners are already occupied by the tiles while putting tiles along the height.]

Tiles needed = 130/10 = 13

Total tiles needed = 13×2 = 26

Allover tiles needed = 60+26 = 86

Hence, 86 tiles will be necessary.

Answer 2

Answer:

86 is the answer.