All categories

3 years ago

A floor 10m by 40m is covered by square tiles 20cm. How many tiles are needed to cover the floor?

Mathematics

1 answer:

Lady_Fox [76]3 years ago

4 0

Answer:

10,000

Step-by-step explanation:

We can find the area of the floor in cm^2 and divide by the are of 1 tile in cm^2.

1 m = 100 cm

10 m = 1000 cm

40 m = 4000 cm

area of floor = LW = 1000 cm * 4000 cm = 4,000,000 cm^2

area of tile = s^2 = (20 cm)^2 = 400 cm^2

number of tiles = 4,000,000/400 = 10,000

Answer: 10,000 tiles

You might be interested in

Geometry homework help???

tatuchka [14]

The explorer's running velocity will be 1/3 the velocity of the train, 45/3 = 15. From those issue statement, the train will a chance to be at the begin of the span The point when those voyagers have run 1/3 of the period of the span. In they run of the much end of the bridge, they will bring run 1/3 of the length of the span when those prepare achieves the close to wind. Beginning starting with those 1/3 point, they will make toward those 2/3 perspective At those prepare achieves those span. The prepare will travel the full period of the span in the the long haul it takes those voyagers to run those remaining 1/3. Accordingly the train must travel toward three times the running speed of the voyager. Train = 45 mph, voyagers = 15 mph. The speed of P&D = 15 mph

3 0

4 years ago

What is the equation of a line that passes through the points `\left(-2\ ,\ 9\right)`and `\left(-4\ ,\ -4\right)`?

Dennis_Churaev [7]

Answer:

y=(5/2)x+14

Use the slope formula and slope-intercept form y=mx+b to find the equation

3 0

3 years ago

Part 1: How's the weather? A. Investigate the weather forecast in your city. Record the high and low temperatures that are forec

victus00 [196]

Using the mean concept, it is found that:

1. The mean change in the forecasted high temperatures is of -0.33ºC.

2. The mean change in the forecasted low temperatures is of 0.5ºC.

-----------------------------

The mean of data-set is given by the <u>sum of all observations divided by the number of observations.</u>

Item 1:

The changes in the high temperature are: 2, 1, -1, -1, -1, -2

Thus:

$M = \frac{2 + 1 - 1 - 1 - 1 - 2}{6} = -0.33$

The mean change in the forecasted high temperatures is of -0.33ºC.

Item 2:

The changes in the low temperature are: 2, -2, 2, 1, 0, 0.

$M = \frac{2 - 2 + 2 + 1 + 0 + 0}{6} = 0.5$

The mean change in the forecasted low temperatures is of 0.5ºC.

A similar problem is given at brainly.com/question/24754716

3 0

2 years ago

HELP PLZ PLZ PLZZZZ I WILL MARK BRAINLYLIESF!!!!!!

Natali [406]

Answer:

150.8

Step-by-step explanation:

The formula for soving cylinder is V=Bh or V=πr2hmso if you plug that in you should get this answer like I did.

3 0

3 years ago

Jonah has a recipe that uses 1 1/2 cups of brown sugar and 2 1/3 cups of flour to make 24 muffins.He has a total of 7 cups of fl

Semmy [17]

Answer:

7 divided by 2 1/3

so he can make 3 batches of 24 muffins for a total of

72 muffins

Step-by-step explanation:

convert 7 to a fraction with 3 as the denominator

3x7 = 21

convert 2 to a fraction with 3 as the denominator

add the extra 1/3 to it.

21/3 divided by 7/3 = 3

7 0

4 years ago