Liliana is making a vase with a circular base. She wants the area of the base to be between 135 cm2 and 155 cm2. Which circle could represent the base of the vase? Use 3. 14 for Pi.
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The area of the vase lies between the area
and 
will be 
.
What will be the area?
As we know that the area of the circle is given by the formula
So now from the question, we will find the radius for both the given areas.
Radius for the first area
Radius for the second area
Now we can see the range of the radius lies
The radius must be r=7 cm lie between two quantities.
Then the area at r= 7cm will be
Thus the area for the vase will be
ar radius r= 7 cm
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