perplexus.info :: Shapes : Diagonal length

Diagonal length (Posted on 2002-06-02)

The diameter of the circle (O), (XY) is 12cm.

Two adjacent vertices of the square (ABCD) lie on the diameter of that circle, while the other two vertices lie on the circumference of the circle.

What is the length of a diagonal of this square (DB)?

See The Solution Submitted by Dulanjana

Rating: 3.5833 (12 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

re: What am I doing wrong?

| Comment 5 of 8 |

(In reply to What am I doing wrong? by Jimmy Bob)

It's the step from AO and BO being 6cm to the assumption that AB is therefore ~8.49cm. This would only be true if AOB was a right-angled triangle, which I'm afraid it isn't.

Posted by Nick Reed on 2002-12-06 14:29:48

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