Posted by **anoynomous** on Sunday, March 10, 2013 at 11:36pm.

The boy having a gold coin of diameter 2cm and thickess 2mm to a goldsmith for melting and drawing into a wire of diameter 1mm . the gold smith gave back a wire of gold of length 76cm with diameter 1mm. if the wastage allowed in melting could be a maximum of 5% of the total volume , does the godsmith man was honest or not

- maths-mensuration -
**Steve**, Monday, March 11, 2013 at 1:30am
If the smith was honest, you want

pi (.05)^2 * 76 >= 0.95 pi (1)^2 * .2

.19 >= .19

Looks like the smith was honest.

- maths-mensuration -
**anoynomous**, Monday, March 11, 2013 at 4:14am
from where .95 comes

- maths-mensuration -
**Steve**, Monday, March 11, 2013 at 10:29am
5% waste means at least 95% of the metal must be left after working on it.

## Answer This Question

## Related Questions

- physics honors - Suppose that pure gold was to be made into a very long, thin ...
- physic - The resistivity of gold is at a temperature of 20°C. A gold wire, 1.8 ...
- Chemistry - Earth's oceans have an average depth of 3800 m, a total area of 3.63...
- physics - The British Sovereign coin is an alloy of gold and copper having a ...
- algebra - A goldsmith has two gold alloys. The first alloy is 30% gold; the ...
- College Algebra - Chemistry - A goldsmith has two gold alloys. The first alloy ...
- help with physics - A gold wire and a silver wire have the same dimensions. At ...
- Physics - A gold wire and a silver wire have the same dimensions. At what ...
- geometry - PLEASE HELP ME! i have this homework due tomorrow and i only have 1 ...
- Algebra - A goldsmith has two gold alloys. The first alloy is 20% gold; the ...

More Related Questions