Math

[revfraniedmundc]

In the MPrep Guide 6: QC and DI, On page 92 (cf. q. 3), you wrote (quote): For instance, say A's radius is 2 and B's radius is 1. In that case, the area of Circle A is 4pi, so Quant. A = 4pi. The area of circle B is pi, so Quant. B = 2pi.

I think that 1 squared is not equal to 2. Rather, it is 1. Hence you could derive the general principle which followed that if a circle is double another's radius, its area will be four times as big.

[jen]

Read carefully! Quantity B (page 87) says "TWICE the area of circle B"! Missing something like that could definitely cost you a question on the GRE!!!!!!

Sincerely,
Jen
Manhattan Prep Instructor