Discussion :: Area

What will be the cost of painting the inner walls of a room if the rate of painting is Rs. 20 per square foot?
I.
Circumference of the floor is 44 feet.
II.
The height of the wall of the room is 12 feet.
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 E
Explanation :
I gives, 2R = 44.
II gives, H = 12.
A = 2RH = (44 x 12).
Cost of painting = Rs. (44 x 12 x 20).
Thus, I and II together give the answer.
Correct answer is (E).
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