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Greetings!
"<span>The circumference of a circle is 12 inches. What is the radius?"...
We can use the formula to find the circumference of circle to solve this:
</span>
<span>
Input the information we know:
</span>
<span>
Solve for r, using the properties of equality:
Simplify.
</span>
<span>Divide both sides by 6.28
</span>
<span>
Simplify.
</span>
The radius is 1.91cm long.
Hope this helps.
-Benjamin
"<span>The circumference of a circle is 12 inches. What is the radius?"...
We can use the formula to find the circumference of circle to solve this:
</span>
<span>
Input the information we know:
</span>
<span>
Solve for r, using the properties of equality:
Simplify.
</span>
<span>Divide both sides by 6.28
</span>
Simplify.
</span>
The radius is 1.91cm long.
Hope this helps.
-Benjamin
Do you see a pattern in the given information?
3 pages in 13 min
9 pages in 39 min
15 pages in 65 min
the rate of pages per min is constant
3/13 = 9/39 = 15/65
the Question is asking for time.. So the we need the rate as min per page 13/3 so when multiplied by the number of pages it cancels to give minutes.
Units cancel out just like numbers do so you know that the problem is set up correctly.
3 pages in 13 min
9 pages in 39 min
15 pages in 65 min
the rate of pages per min is constant
3/13 = 9/39 = 15/65
the Question is asking for time.. So the we need the rate as min per page 13/3 so when multiplied by the number of pages it cancels to give minutes.
Units cancel out just like numbers do so you know that the problem is set up correctly.