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3 years ago

There are 1,920 fence posts used in a 12-kilometer stretch of fence. How may fence posts are used in 1 kilometer?

Mathematics

1 answer:

pashok25 [27]3 years ago

4 0

Answer:

160

Step-by-step explanation:

Number of fence posts used in 1 kilometer

$= \frac{1920}{12} \\ \\ = 160$

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I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Step2247 [10]

Answer:

$A = 297\pi$

Step-by-step explanation:

To solve this problem we need to be familiar with the formula for the surface area of a cone:

$A = \pi r(r + \sqrt{h^2+r^2})$

We are given the length of a side and the diameter, to calculate the radius divide the diameter in half:

$r = \frac{d}{2}\\r = \frac{18}{2}\\r = 9 cm$

To calculate the height of the cone, we must use the Pythagorean Theorem:

$C^2 = A^2 + B^2$

We can treat the side length as the hypotenuse $C$ , the radius as the base $A$ , and solve for height $B$ . Set the expression up like this:

$C^2 = A^2 + B^2\\24^2 = 9^2 + B^2\\B^2 = 24^2 - 9^2\\B = \sqrt{24^2 - 9^2}\\B = \sqrt{576 - 81}\\B = \sqrt{495}\\B \approx 22.25$

Now we can plug into our original formula:

$A = \pi r(r + \sqrt{h^2+r^2})\\A = \pi 9(9+\sqrt{\sqrt{495}^2+9^2}\\A = \pi 9(9+\sqrt{495 + 81}\\A = \pi 9(9+\sqrt{576})\\A = \pi 9(9 + 24)\\A = \pi 9(33)\\A = 297\pi$

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2 years ago

One number is 8 greater than another. The product of the numbers is 48. Find the numbers.<br> ch

Naya [18.7K]

The numbers could be 20+28=48

6 0

4 years ago

Use the net below to determine the surface area of the cylinder. (Use 3.14 for Tr.)

baherus [9]

Option D:

Surface area of the cylinder = 753.6 cm²

Solution:

<u>To find the surface area of the cylinder:</u>

Given data:

Radius of the cylinder = 6 cm

Height of the cylinder = 14 cm

The value of π = 3.14

Surface area of the cylinder = $2 \pi r^{2}+2 \pi r h$

$=2\times 3.14\times6^2+2\times3.14\times 6 \times14$

= 226.08 + 527.52

= 753.6 cm²

Surface area of the cylinder = 753.6 cm²

Option D is the correct answer.

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4 years ago

Which equation has the solution x = 5?

Ulleksa [173]

Answer:

the answer is 12-345

Step-by-step explanation:

14-6284

2057-358

2947-382

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2 years ago

Round 0.033974361 to five decimal places<br> Places

dalvyx [7]

Answer:

.03397

Step-by-step explanation:

The fifth decimal is 7, and the number after that is 4. Because 4 is not greater than or equal to 5, we do not round up the 7.

4 0

3 years ago

Read 2 more answers

There are 1,920 fence posts used in a 12-kilometer stretch of fence. How may fence posts are used in 1 kilometer?​

There are 1,920 fence posts used in a 12-kilometer stretch of fence. How may fence posts are used in 1 kilometer?