1. 

What is the area of the circle?

I. The circumference of the circle is 308 m.

II.The radius of the circle is 28 m.

A. I alone sufficient while II alone not sufficient to answer
B. II alone sufficient while I alone not sufficient to answer
C. Either I or II alone sufficient to answer
D. Both I and II are not sufficient to answer
E. Both I and II are necessary to answer

Answer: Option C

Explanation:

I. 2R = 308 <=> 2 x 22/7 x R = 308

<=> R = 308 x 7/44 = 49

Thus A = R2can be obtained.

∴ I alone gives the answer.

II. R = 28 m gives A = ( x 28 x 28) cm2

Thus, II alone gives the answer.

∴ Correct answer is (C).