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mart [117]
3 years ago
11

Help if you can with all answers or at least some

Mathematics
2 answers:
yan [13]3 years ago
7 0
Area of a circle is pi * radius² so:

1) Area = pi * 5²

= 25pi ≈ 78.54 yd²

2) Area = pi * 7²

= 49pi ≈ 153.94 cm²

Circumference is 2 * pi * radius so:

3) Circumference = 2 * pi * 10

= 20pi ≈ 62.83 mi

4) Circumference = 2 * pi * 3.3

= 6.6pi ≈ 20.73 in

Volume of a rectangular prism is length * width * height

5) Volume = 10 * 3 * 10

= 100 * 3
= 300 yd³

6) Volume = 5 * 7 * 5

= 35 * 5
= 175 in³

Not completely sure on the triangular prisms though. I'm almost certain the formula is 1/2 * height * base 1 * base 2 though
trasher [3.6K]3 years ago
6 0
1). You use the formula A=(pi)r^2
A=(pi)(5)^2
A= 78.5yd
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N/4 less than or equal to 5
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The length of a city block running north to south in NYC is about 5 times 10 to the negative second power miles. The distance fr
NemiM [27]
So nyc=5 times 10^-2 miles

NYC-Mumbai=7.5 times 10^3

so
5 times 10^-2 times x=7.5 times 10^3
divide both sdies by 5 times 10^-2
x=(7.5 times 10^3)/(5 times 10^-2)
when dividing scientific notation you do this
x=(7.5 times 10^3)/(5 times 10^-2)=(7.5/5) times ((10^3)/(10^-2))
to divide exponents just subtract top from bottom
3-(-2)=5
answer is
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7 0
3 years ago
The tallest tree in the world is reputed to be a giant redwood named Hyperion located in Redwood National Park in California, US
dlinn [17]

Answer:

114.02 meters

Step-by-step explanation:

The information you're given about the tree will form a triangle, with the three corners being the top of the tree, the point where the tree meets the ground, and the specified point 41.5 meters from the tree. The angle of elevation (70°) is the angle made where the line representing the ground and the line connecting the top of the tree to the ground at the specified point connect.

The angle where the tree meets the ground is 90°, so the triangle a right triangle.

So this all means you know one angle of a right triangle (70°) and the side adjacent to this angle (41.5 meters). You're solving for the height of the tree, which is the side opposite of the angle you know. You can solve using either <em>Sine, Cosine, </em>or <em>Tangent.</em>

Use the acronym SOHCAHTOA to figure out which of those three functions to use. Feel free to look this up for more information if you haven't heard of it before. In this case, we're using Tangent (TOA = Tangent, Opposite side, Adjacent side)

To solve using any of those three functions, you'll need a scientific calculator. On your calculator, you'll see the buttons <em>SIN, COS, </em>and<em>TAN.</em> For this problem, press <em>TAN</em> and you'll see something appear that says <em>tan (___)</em>. You'll need to input a number to get your answer, and here's how to find that number:

Again referencing SOHCAHTOA, the "TOA" part lists Opposite first and then Adjacent. This is because you're going to write a fraction with those two numbers, and since Opposite is first, it's the numerator. That means that Adjacent is the denominator. We don't know the value of the opposite side, so it'll be represented by <em>x</em>, and we do know the value of the adjacent side, 41.5. This means the fraction is \frac{x}{41.5} .

This isn't the number to input into the calculator -- you need to isolate the variable:

The original equation is:

tan 70 = x/41.5

Multiply both sides by 41.5 (To cancel out the denominator and isolate <em>x</em>)

tan 70 (41.5) = x

Now you've got the equation for <em>x, </em>you're ready to put this in your calculator.

What appeared on your calculator was:

tan(__)

Input like follows:

(tan(70))41.5

The brackets are needed like that so the calculator knows to multiply the entire thing by 41.5. You might get a wrong answer otherwise.

Hit enter, and you'l get the height of the tree:

114.02 meters

5 0
3 years ago
Dustin is riding his bike from Logan, Utah to Jackson Hole, Wyoming in a bike race. He must ride at least 200
sashaice [31]

Answer:the answers is 88 1/2

Step-by-step explanation:

3 0
3 years ago
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Hey i have a question i need help with this it says...
dem82 [27]

Answer:

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Step-by-step explanation:

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2 years ago
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