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3 years ago

How did the great pyramid of giza get 30 feet shorter?

1 answer:

6 0

The Great Pyramid of Giza was built around 2560 BC. It is believed to had then 481 feet while now it has about 455 feet. These approximately 30 feet that are missing are due to land movements, causing the pyramid to sink in the soil, as well as erosion. Over so many years since its construction, the pyramid has been exposed to strong winds and general weather erosion, much thanks to the type of stone that is its structure, as well, which is prone to erosion.

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Find the length of arc AD. Use 3.14for r. Round to the nearest tenth.7.9 cmB66.4DС[? ]cmEntar

ch4aika [34]

The first thing we must do is calculate the circumeference:

$\begin{gathered} c=2\cdot\pi\cdot r \\ c=2\cdot3.14\cdot7.9 \\ c=49.612 \end{gathered}$

now, calculate the angle of arc

360° = 49.612

360° - 66.4° - 180° = x

x = 113.6°

now, to calculate the arc length it would be:

$undefined$

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2 years ago

Test worth 75 points ; test score of 96%

vfiekz [6]

Presuming the question is "How many points did he miss", you would find the solution by multiplying the amount of possible points by the test score as a fraction. 96% is the fraction $\frac{96}{100}$ . Therefore, you get the equation $75*\frac{96}{100}$ . This is equal to 72, so he missed 3 points, or 75-72 points.

He missed 3 points.

6 0

4 years ago

Read 2 more answers

24 red marbles is40% of ? Marbles

Anvisha [2.4K]

Answer: The answer is 60

Step-by-step explanation: 40% = .4 because % means hundredths. So 40% = 40/100 = .4

Let x be the total number of marbles.

Then, .4x = 24

Divide both sides by .4

x = 60 and 24 is 40% of 60 marbles

5 0

4 years ago

Read 2 more answers

Matthew purchased a desk that was on

natulia [17]

Answer:

ANSWER :

285.12

discount amount =45/00 x 480=45 x 48/10

=216.0

price of discount =480-216=264

salex tex 8/100 x 264. =21.12

total many of spend 264+21.12=285.12

4 0

3 years ago

What is the m∠ACB in the circle shown below?

GuDViN [60]

Question:

What is the m∠ACB in the circle shown below?

Answer:

Step-by-step explanation:

So we know it is less than a right angle and it is not a obtuse angle it is less than 90 degrees. 45 is less, 90 is equal(not what we are looking for) , 120, is greater, and 180 is greater which leaves us to our answer 45.

4 0

3 years ago