1 m=100 cm
→ 1 sq m = 1 m x 1 m = 100 cm x 100 cm = 10000 sq cm
→ 15 sq m=15 X10000 sq cm = 150000 sq cm
Each tile has an area of 30 cm x 60 cm = 1800 sq cm
→ number_of_tiles = 150000 / 1800 = 83 1/3 tiles.
If you are going to buy the tiles you would have to buy 84 tiles.
But if this is a real life question as opposed to a maths problem then you would normally by about 10% extra to allow for breakages, cutting, etc, meaning you should buy at least 93 tiles, but that could depend upon the thickness of the tiles and how you are going to cut any that need to be cut.
2
12
36
Two tiles can only make one rectangle.
5 x 8 = 40, so 40 tiles are in this rectangle.
Whenever different units are specified in a problem, we need to convert them to one common unit. The total area is given in square meters but the tile measurements are given in cm. So let's convert the tile measurements to meters. Why not convert the total area to square centimeters. Sure you can, only thing is all measurements must be in the same unit. No mixing of units. So the tile size in meters is 0.3m x 0.3m and so the area of a single tile is 0.09 square meter. Divide total area by area of a single tile and you will get the number of tiles needed. Thus the number of tiles needed is 18.5/0.09 = 205.5 tiles, make it 206 tiles.
231
2
2
A 60cm pendulum will make 53 swings in one minute. The formula to calculate this is: number of swings = (60 / 1.18) * 60.
25 * 20 = 500 tiles
The area of the tile (10 cm x 10 cm) = 0.1 m x 0.1 m = 0.01 m², so it takes 100 tiles to make a square meter. There are 200 m² in 10 m by 20 m, so you need 20000 tiles (20 thousand)
It depends on how many tiles long you wish to make your rectangle. Once that is determined, multiply your width by your length and you will have the amt of tiles needed. ie: 3 tiles wide and 4 tiles long= 12 tiles
3*5 = 15 tiles.
6
60
12