Monday

October 20, 2014

October 20, 2014

Posted by **syram** on Thursday, March 7, 2013 at 6:11pm.

- math -
**PsyDAG**, Friday, March 8, 2013 at 1:24pmIt would help if you proofread your questions before you posted them.

I assume that all of your "placements" are really placemats.

Area = π * r^2

d = 2r

Area of coaster = π * 3.5^2

Area of placemat = π * 7^2

Subtract area of coaster from area of placemat.

**Answer this Question**

**Related Questions**

algebra - A circular coaster, with a diameter of 7 inches, is positioned on a ...

summer math hw - one circle has a diameter of 10 inches. a second circle has a ...

Math - Juan says the diameter of circle with a radius of 8 inches is 4 inches. ...

Physics - you measure the diameter of a circle then you calculate the radius of ...

math - A diameter of a circle is perpendicular to a chord whose length is 12 ...

math - If the number of square inches in the area of a circle is equal to the ...

math - If the number of square inches in the area of a circle is equal to the ...

geometry - A diameter of a circle is perpendicular to a chord whose length is 12...

geometry - A diameter of a circle is perpendicular to a chord whose length is 12...

geometry - A diameter of a circle is perpendicular to a chord whose length is 12...