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1)If the number of square units in the area of a circle is A

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1)If the number of square units in the area of a circle is A [#permalink]  23 Aug 2003, 07:46
1)If the number of square units in the area of a circle is A and the number of linear units in the circumference is C, what is the radius of the circle?

1. A/C = 3/2
2. A > C + 3

i can find the radius using statement 1.how shall i proceed with statement 2??

2)What is Ram’s age?
(I) In 15 years Ram will be twice as old as Diana would be
(II) Diana was born 5 years ago

thanks
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2) C?
stment 1: R+15=2*(D+15) not suf
stment 2: D=5 not suf
both statments suf (and R=25)
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yup ! the second questions answer is c.what bout the first question?how must i proceed with the second statement.
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1) My answer would be A

P=pi=3.14...

A/C=p*r┬▓/2*p*r =3/2=> sufficent

A > C + 3 => P*r┬▓ > 2*p*r + 3 => not sufficent
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