dabaobao wrote:

I did the question in a similar way. Could someone please explain why A is not sufficient?

For a square, we know:

A = x^2

P = 4x

A/P = x/4 => P = 4A/x

So shouldn't any equation in that form (i.e. Statement A: P = 4A/3) be sufficient? According to A, our side x would be 3 but I don't think the side would matter since we just need the equation to be in the form P = 4A/x.

Hey

dabaobao ,

You did a very BIG mistake of not reading the question properly.

Question says "If

a rectangular region" but you took it a square.

For a rectangle, Perimeter = 2(l+b) and area = l * b.

Now, try substituting the values in statement A, you won't be able to determine whether l = b for the region to be a square. Hence, A is insufficient.

Does that make sense?

_________________

My GMAT Story: From V21 to V40

My MBA Journey: My 10 years long MBA Dream

My Secret Hacks: Best way to use GMATClub | Importance of an Error Log!

Verbal Resources: All SC Resources at one place | All CR Resources at one place

Blog: Subscribe to Question of the Day Blog

GMAT Club Inbuilt Error Log Functionality - View More.

New Visa Forum - Ask all your Visa Related Questions - here.

New! Best Reply Functionality on GMAT Club!

Find a bug in the new email templates and get rewarded with

2 weeks of GMATClub Tests for free

Check our new About Us Page here.