Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**dadon****Member**- Registered: 2006-04-12
- Posts: 14

Hey guys,

Needed some help on 2 proof questions:

1) Prove that the centre of mass of a uniform wire in the form of a semi-circle of radius r is at a distance 2r/pie (sorry don't know how to insert symbol) from the centre.

2) Prove that the centre of mass of a uniform semi-circular laminar of radius r is at a distance 4r/3pie from the centre.

I hope you guys can help. Thanks

kind regards,

dadon

Offline

**pgonzales****Member**- Registered: 2006-04-21
- Posts: 1

In a FY 2/03 budget, directed projects amount per contract were $250,000. In Fy 03/04, this amount increased to $287,500. What is the amount of the increase?

Offline

**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 13,227

pgonzales,

the amount of increase in percentage is

Character is who you are when no one is looking.

Offline

**dadon****Member**- Registered: 2006-04-12
- Posts: 14

lol stole my thread!

Offline

**dadon****Member**- Registered: 2006-04-12
- Posts: 14

Still having promblem with the proof questions! I would be greatly if someone can help

Kind Regards,

dadon

Offline

Pages: **1**