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

You are not logged in.

- Topics: Active | Unanswered

**Hannibal lecter****Member**- Registered: 2016-02-11
- Posts: 195
- Website

Hi,

what is the the Radius of a Square in a circle? and how to calculate it?

Wisdom is a tree which grows in the heart and fruits on the tongue

Offline

**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,232

hi Hannibal lecter

If the four corners of a square touch the circumference of a circle then the diagonal of the square must be the diameter of the circle. So use Pythag. to calculate the diagonal and half it to get the radius.

If it's the other way round and the circle touches the sides of the square, then the length of the side is the diameter of the circle.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Offline