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Re: Difficult Math Question #53 - Geometry

800guy wrote:If the perimeter of square region S and the perimeter of circular region C are equal, then the ratio of the area of S to the area of C is closest to

(A) 2/3
(B) 3/4
(C) 4/3
(D) 3/2
(E) 2

B

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I hope i can explain it: From the given data: LHS: x ( sqrt x ) ^6 = x^4 RHS: 2^6 * y the equation is x^4 = y* 2^6 so what is asked is whether y > 2^6? Condition 1: x= sqrt y :arrow: x^4 = y^2 which may or may not be greater than y * 2^6 unless y> 2^6, which we cannot deduce here. Contition 2: x>8 ...

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Re: DS004

ajith wrote:DS004

is |x+y| = 5?

1) |x| = 3
2) |y| = 2

Obviously we need both x and y. But both stmts are inadequate to answer the question..

Stmt1 : X = -3 or 3
Stmt2 : Y = -2, or 2

So |x+y| = 1 or 5

E is my answer...