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3 years ago

Please and thank you to whoever helps

Mathematics

1 answer:

Zepler [3.9K]3 years ago

8 0

Answer:

1131.0 m³

Step-by-step explanation:

Using the formula for the volume of a cylinder, fill in the appropriate values and do the arithmetic.

V = πr²h

Since this formula needs the radius of the cylinder and you are given the diameter, you must divide the diameter by 2 to get the radius:

r = d/2 = (12 m)/2 = 6 m

Then the volume is ...

V = π(6 m)²(10 m) = 360π m³ ≈ 1131.0 m³ . . . . . rounded to tenths

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An engineer makes different-size samples of a new material.

miv72 [106K]

Answer:

The mass of 100 cubic centimeters of the material would be

1,000 grams.

The mass of 500 cubic centimeters of the material would be

5,000 grams.

Step-by-step explanation:

3 0

3 years ago

What is -4/10 + 5/10

Blababa [14]

-4/10+5/10
=5/10-4/10
=1/10

5 0

3 years ago

Please respond to the question below in your own words with proper explanations

ycow [4]

Answer:

$t(400)=673$ .

It means that 673 of 9 inch tiles are required to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

Step-by-step explanation:

Given:

The function relating number of 9 inch tiles required and area to cover is:

$t(A)=\frac{144}{9.25^2}A$

Now, plug in 400 for $A$ to evaluate $t(400)$ .

$t(400)=\frac{144}{9.25^2}\times 400=\frac{144\times 400}{85.5625}=\frac{57600}{85.5625}=673.19\approx6225$

Therefore, Don required 673 of 9 inch tiles to cover an area of 400 square feet, when spacing the tiles a quarter inch apart.

4 0

3 years ago

Write a linear equation in point slope form points (2,5) and (-4,9)

kvv77 [185]

(2,5) equal 10
(-4,9) equal 5
But if you were taking away 10 - 5 equal 5

6 0

3 years ago

15. The floor plan of the basement of a shopping centre is drawn to a scale of 1:400.

maks197457 [2]

Answer:

4 hectares

Step-by-step explanation:

<u>The scale factor is:</u>

k = 1/400

Applied to the area we consider k² as the area is the product of two dimensions.

<u>Find the actual area:</u>

0.25 m² : (1/400)² =
0.25 m² * 160000 =
40000 m² =
40000 * 1/10000 hectares =
4 hectares

6 0

3 years ago