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3 years ago

Can anyone figure this out and explain? Thanks

Mathematics

2 answers:

dezoksy [38]3 years ago

5 0

The deepest point of the lake is -922, so to get to the surface of the lake you would need to add 922 feet.

The deepest point of the lake is 11,542 feet above sea level.

To find the surface of the lake add 922 to 11,542.

11542 + 922 = 12,464 feet

Vedmedyk [2.9K]3 years ago

5 0

11,542 - (-922) = 12,464 so the highest point is 12,464. AKA Elevation of the Lake.

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3 years ago

Big Ben, the famous clock tower in London, has a minute hand that is 14 feet long. How far does the tip of the minute hand of Bi

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Answer:

36.65 ft (2 dp)

Step-by-step explanation:

Angles around a point sum to 360°
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Therefore, the minute hand of a clock travels 360° in 60 minutes

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To find how far the tip of the minute hand travels in 25 minutes, use the Arc Length formula:

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Given:

r = length of minute hand = 14 ft
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$\begin{aligned}\implies \textsf{Arc length} &=2 \pi (14)\left(\dfrac{150^{\circ}}{360^{\circ}}\right)\\ & = 28\pi \left(\dfrac{5}{12}\right)\\ & = \dfrac{35}{3} \pi \\ & = 36.65\: \sf ft\:(2\:dp)\end{aligned}$

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2 years ago

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Andrei [34K]

Answer:

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2 years ago

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