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RoseWind [281]
3 years ago
14

Susan makes a trundle wheel. the radius of the wheel is 0.2 meters. she pushes the wheel across the playground. the wheel makes

30 complete revolutions. find the distance across the playground.
pi is 3.14​
Mathematics
2 answers:
a_sh-v [17]3 years ago
7 0

Answer:

37.68 meters

Step-by-step explanation:

okay so in this question, you need to find out the circumference of the wheel, that is the distance that the wheel covers if u cut it and laid it flat down. so then to find the circumference when given a radius would be to use the equation 2(pi)r

so then the circumference is .2*2*3.14 = 1.256meters.  

now thats the distance covered if the wheel went around one revolution so in 30 revolution, you multiply it by 30 so then

1.256*30  = 37.68 meters, give or take because the calculator's pi is more than just 3.14. but overall the answer is 37.68 meters.

sp2606 [1]3 years ago
6 0

Answer:

3

Step-by-step explanation:

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A rectangle has an area of 171 square meters. Its width is ten meters less than the length. Find the measures of the length and
9966 [12]

Step-by-step explanation:

The area of a rectangle is 171 m²

Let l is the length and b is the width of the rectangle

It width is 10 m less than the length. So,

b = l-10 ...(1)

Area of a rectangle is given by :

A=l\times b\\\\171=l(l-10)\\\\l^2-10l=171\\\\l^2-10l-171=0\\\\l^2-19l+9l-171=0\\\\\text{taking common together}\\\\l(l-19)+9(l-19)=0\\\\(l-9)(l-19)=0

or

l = 9 m or l = 19 m

If l = 9 m,

b = 9-10 = -1 m (can't be possible)

If l = 19 m

b = 19-10 = 9 m

So, the length an the breadth of the rectangle is 19 m and 9 m respectively.

8 0
3 years ago
What is 12.55 to the nearest 1 decimal place
yaroslaw [1]
One decimal place means one place after the decimal point, therefore you should round appropriately to get to one place after the decimal point.

The answer would therefore be 12.6 <span />
4 0
3 years ago
I do not know 28y + 12x
vivado [14]

Answer:

280 + 120 = 400

Step-by-step explanation:

the intercept to both is 0

6 0
2 years ago
20 divided by c write an algebraic expression for the word expression ​
umka21 [38]

Step-by-step explanation:

The algebraic expression is

20

----

c

or

20/c

6 0
2 years ago
Write 12 1/3 as an improper fraction.
Julli [10]

Answer:

\frac{37}{3}

Step-by-step explanation:

12\frac{1}{3}

When converting mixed numbers (such as the one above), to improper fractions, we must first multiply the whole number by the denominator:

12*3=36

Then, add the numerator the the product:

36+1=37

Now, put the sum over the denominator to get your solution:

\frac{37}{3}

-

To check your work, you can convert the improper fraction to a mixed number to make sure you will end up with 12\frac{1}{3}.

Divide 37 into 3:

12 with a remainder of 1

Put the remainder over the denominator:

12\frac{1}{3}

Therefore, our solution is correct!

7 0
3 years ago
Read 2 more answers
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