My Math Forum  

Go Back   My Math Forum > High School Math Forum > Geometry

Geometry Geometry Math Forum

LinkBack Thread Tools Display Modes
April 16th, 2015, 12:56 AM   #1
Joined: Apr 2015
From: Southampton

Posts: 4
Thanks: 0

Help with circle sandwiched between two squares

I'm having real problems with this one. Can anyone help? Thanks in advance!

See attached
Attached Images
File Type: jpg problem2.jpg (51.8 KB, 8 views)
Paul9999 is offline  
April 16th, 2015, 02:41 AM   #2
Global Moderator
Joined: Dec 2006

Posts: 20,624
Thanks: 2077

By Pythagoras, AB² = 2AO² = 50cm². Hence AB = 5√2cm, and so the length of the perimeter of ABCD is 20√2cm. The corresponding length for square PQRS is 40cm.

The circumference of the circle is 2$\pi$ × 5cm = 10$\pi$cm.

Can you make progress from there?
skipjack is offline  

  My Math Forum > High School Math Forum > Geometry

circle, sandwiched, squares

« find mn | Geometry »

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Area enclosed by a semi-circle and a quarter circle yeoky Algebra 4 May 3rd, 2014 01:06 AM
How to create a circle within another circle Aska123 Algebra 9 January 29th, 2014 11:06 PM
Rotate A Circle About A Circle gailplush Algebra 5 August 8th, 2010 04:19 AM
Circle inside Circle (ask) sir anrava Algebra 1 January 19th, 2010 11:18 AM
Packaging circle into a circle Titan Algebra 0 March 7th, 2008 05:14 PM

Copyright © 2019 My Math Forum. All rights reserved.