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Sunday, November 20, 2011

Jennily's Math Blog

Homework book Chapter 2.4
Question number 16

A square has an area of 225 cm². What is the radius of the largest circle that can fit inside the square? Show your thinking.

S² = 225cm²
So if S² is 225cm² than what i had to do was find S by it by itself. By finding S i had to square root S² .
√225cm² and i got 15.
S = 15cm
Since i found S which is one side of the square, i know that one side equals to the diameter of the circle. So what i did next was took the diameter and dived it by 2.
d/2 = r
15/2 = 7.5
7.5 = r
The radius of the largest circle is 7.5cm.


  1. Nice post Jennily! You did a good job explaining your work.One thing I think you could have improved was spacing your post out more. Also, make the white space around your picture smaller just so the actual image of the circle would be larger. And also remove the large space at the bottom of your post, but that isn't that important. Anyways, you did a good job. Keep it up!

  2. Good Job on this post Jennily! I totally agree with Melanie, you did a good job explaining your work but could have deleted the extra space you have on this post. Overall, those are just minor mistakes. Keep it up!

  3. Good job, Jennily! I liked how you explained your work. Next time try taking out the extra space in your image and space your work more. Keep it up!