All categories

3 years ago

3. A rectangular floor of dimensions

Mathematics

2 answers:

blagie [28]3 years ago

5 0

<h2>Answer:</h2>

Area of rectangular floor = l × b

= 8.4m × 5.4m = 45.36m².

Area in cm² :- 45.36 × 10000 = 4,53,600cm².

Area of triangular marble pieces = 1/2 × b × h

= 1/2 × 40 × 30 = 20 × 30 = 600cm².

So, No. of marbles = 453600cm²/600cm²

= 756 marble pieces.

ICE Princess25 [194]3 years ago

4 0

Answer:

area of the floor = 540*840.

=453600 cm sq.

area of the marbal piece = 1/2 * 40* 30 = 600 cm sq.

now,

no. of marble piece reqd. = 453600 / 600 = 756 marbal piece.

hope it helps u.

You might be interested in

Michael has a set of 24 math problems to do for homework. Michael completed 1/4 of his homework in 3/4 of an hour. If he continu

gtnhenbr [62]

Given:

Total number of problems = 24

Michael completed $\dfrac{1}{4}$ of his homework in $\dfrac{3}{4}$ of an hour.

To find:

What fraction of his homework would he complete in one hour.

Solution:

We have,

Part of work done in $\dfrac{3}{4}$ of an hour $=\dfrac{1}{4}$

Part of work done in an hour $=\dfrac{4}{3}\times \dfrac{1}{4}$

$=\dfrac{1}{3}$

Therefore, he complete $\dfrac{1}{3}$ of his homework in 1 hour. Hence, all options are incorrect.

3 0

2 years ago

2^3 x 2^6 x 2^? = 2^12

kow [346]

Answer:

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

What is the slope of the line shown in the graph? A 3/2 B) 2/3 C) -3/4 D) -2/3

garik1379 [7]

Answer:

Step-by-step explanation:

y-intercept is (0, 3)

x-intercept is (4.5, 0)

formula to find the slope from two points is

$slope = m = \frac{y2 - y1}{x2 - x1} = \frac{y1 - y2}{x1 - x2} \\$

then the slope of the line that crosses (0, 3) & (4.5, 0) is

$m = \frac{3 - 0}{0 - 4.5} = \frac{3}{ - 4.5} = - \frac{3}{ \frac{9}{2} } = - \frac{2}{3}$

6 0

2 years ago

Read 2 more answers

Set X consists of 100 numbers. The average (arithmetic mean) of set X is 10, and the standard deviation is 4.6. Which of the fol

kompoz [17]

Answer:

E. 10 and 10

Step-by-step explanation:

Standard Deviation is the square root of sum of square of the distance of observation from the mean.

$Standard deviation(\sigma) = \sqrt{\frac{1}{n}\sum_{i=1}^{n}{(x_{i}-\bar{x})^{2}} }$

where, $\bar{x}$ is mean of the distribution.

Here, since standard deviation is the ratio of the distance from the mean and sample size. So for decreasing the standard deviation we should keep numerator constant and increasing the denominator.

This can be only possible in option (E).

Hence, only Option (E) is correct.

5 0

3 years ago

What is the difference in size between 1 1/2 and 1/ 4

Nimfa-mama [501]

1 1/2 - 1/4=?

1 1×2 2
__ = __
2×2 4
- 1
__
4
_____
1 1
__
4

1 1/4 is the answer.

4 0

3 years ago