I believe you're solving for the pie crust surrounding the pie. If so, use the circumference formula which is 2*pi*r. The circumference is the border of the circle.
Notice that you can re-write it as:
x^2+y^2+(z-1)^2 = 1
Now you should know (shifted ... sphere in the z axis by 1 unit, right)
The 19th amendment gave The rights to woman to vote
<span>- <u>Two angles are obtuse</u>.
No. There are no obtuse angles in a square.
- <u>All sides are equal</u>.
No. It's true of squares AND rhombuses.
- <u>Two or more angles are right angles. </u>
Yes. Always true for a square, sometimes true for a rhombus.
- <u>More than two sides are parallel.</u></span>
Confusing, so call it a 'no'.
In both squares and rhombuses, every one of the four sides
is parallel to ONE other side.
<u>Another important note:</u>
Look at the statement that's true always for a square and sometimes for a rhombus:
"Two or more angles are right angles".
WHEN does a rhombus have right angles in it ? Fasten your seat belt and hold on tight:
A square is a special kind of rhombus. It's a rhombus that has right angles in it.
So a rhombus has right angles in it <u>when it's a square</u>.
Set up a ratio.
x= portion of 1 hour
4 miles/1 hour= 1 mile/ x hour
cross multiply
4 * x= 1 * 1
4x= 1
divide both sides by 4
x= 1/4 of an hour
To find number of minutes:
1 hour= 60 minutes
=1/4 of an hour * 60 minutes
=60/4
=15 minutes
ANSWER: It would take 1/4 of one hour ( or 15 minutes) to walk 1 mile.
Hope this helps! :)