Suppose the diameter of a circle is 10. What is its area?

Answers

Answer 1

Answer: Well hello again :3. This is also quite simple. The diameter of a circle is 2 times the radius. So we can refit this into the equation and say that our new formula using diameter is $pi(d^2/2)$ . Now we can say that 10/2 is 5 and $5^2$ is 25. Therefore your answer is $25pi$ or 78.54.

Answer 2

Answer: To find area you must use the formula A= pi*radius. So the radius is always 1/2 of the diameter. 10/2 is 5.So your radius is 5. multiply 5 by 3.14, to get the area of 78.54

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What's 0.32 in simplest form ?
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What is the simplest form of 4/8
Someone help me on this

***Please help with this***
~Thank you :)

Answers

-- You know that the area of every rectangle is (its length) times (its width).

-- Area of the screen you have now = (10.8cm) x (6.1cm) = 65.88 cm²

-- Area of the screen on the new phone = (12.4cm) x (6.9cm) = 85.56 cm²

Say ! Are you supposed to write an equation to find the difference ?
OK.
Difference = (L₂W₂) - (L₁W₁)

L₂ and W₂ are the length and width of the new phone

L₁ and W₁ are the length and width of the phone you have now.

I'm sure that if you want to know what the difference is, you can
use that equation to find it.

Concerning the question in the blue box: I guess "Write an Equation"
was not a very effective strategy for solving this problem. Not only
did you not write an equation, you didn't even mention that an
equation was supposed to be written when you posted it. You just
kind of shied away from the whole subject.

Looking over the choices, I'd say that my equation allows you to use
the numbers given in the problem to calculate the unknown.

-25=1/3n - 10 algebraic expression

Answers

-25=1/3n - 10

move -10 to the other side

sign changes from -10 to +10

-25+10=1/3n-10+10

-25+10=1/3n

-15=1/3n

multiply both sides by 3/1 to get n by itself

(-15)(3/1)=1/3n(3/1)

cross out 3 and 3 and 1 and 1, divide by 3 and 1

then becomes 1*1*1*1*n=n

(-15)(3/1)==45/1=-45

answer:

n=-45

You will need 90 feet of fencing to put all the way around a rectangular garden. The width of the garden is 10 feet. What is the length?

Answers

I'm pretty sure the length of the other side is 35 feet.

35+35+10+10=90

An object travels 4/5 miles in one half hour. What is the speed

Answers

The speed is 4/5 mile per half hour.

the speed would be:

4/5 x 2 = 8/5 miles for an hour

What fraction of a mile is each landmark from the exit? Zoo 0.8 miles Camping 0.5 miles Hotels 0.2 miles

Answers

You can convert decimals into fractions by understanding how a decimal already is a fraction. Let's take the location of the zoo from the exit. It's 0.8 miles from the exit, right? Just add a "0" to the end of the "0.8", so you have "0.80". "0.80" is also written as 80 out of 100, which is also written as 80/100. Now, you can simplify this like a normal fraction and get 8/10. The same applies for the other two locations. The Campsite is 0.5 miles from the exit, or 0.50, or 50/100, and then 5/10, and even further to 1/2. This is because 5 is half of ten. The Hotel is 0.2 miles from the exit, which is 0.20 miles, aka 20/100, which can then be simplified to 2/10 and then 1/5, because 2 is a fifth of ten.

I hope I helped! And if you have any questions or don't understand what I wrote, feel free to contact me about it. :D Have a great day!

First see how many digits are in the decimal. 0.8 has 2 digits, so it's a 10. My denominator is 10. My last digit is 8, so my numerator is 8. 8/10 is my answer. Convert 0.5 to 5/10 and 0.2 to 2/10. Just use the same rules for all the answers. Also, if you had for example 0.09 then your answer will be 9/100. Also, another example is if you had 0.030 then your answer will be 30/1000.

Hope that helped:)

What is 2.63 to the nearest tenth

Answers

2.6 or 2.60 I believe.

The 6 is the tenth place. And the number to the right is 3. Which is lower than 5. We round down.

2.63 becomes 2.6

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