Posted by **Anonymous** on Saturday, October 24, 2009 at 6:58am.

The surface area of a piece of gold is directly proportional to the square of its weight. By what ratio should the weight be adjusted so as to double the surface area.

- Mathematics -
**bobpursley**, Saturday, October 24, 2009 at 7:08am
surface area= k w^2

w=sqrt (area/k)

double surface area.

w'=w sqrt2

- Mathematics -
**Anonymous**, Saturday, October 24, 2009 at 8:53am
Thanks.I had a similar question in my recent exam. I followed a similar procedure...Made a silly error though at the end,forgot to square root..I ended up with w^2'=2w^2.

## Answer this Question

## Related Questions

- algebra - Your friend has a cube of gold. You have a cube of gold that weighs ...
- mathematics - What is the solution for this? The surface area of a sphere varies...
- Geometry - When finding the surface area of a composite figure, which in this ...
- algebra - First: solve for k. Then, go back to the original equation c=k(d-3) ...
- Bio - Please Check my work and help me to answer the questions i could not get. ...
- Bio - Please Check my work and help me to answer the questions i could not get. ...
- Dynamics - The coefficients of friction depends up on ________ a)Nature of the ...
- math/science - The total surface area of Earth is about 1.97 × 10^8 square miles...
- chemistry - The total surface area of earth is about 1.97*10^8 square miles. the...
- Physics - Suppose a new extrasolar planet is discovered. Its mass is double the ...

More Related Questions