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What is the cost of flooring a rectangular hall? I. Perimeter of the hall is 76 m II. Area of the hall is 336 m 2. III. Cost of flooring per square metre is $550.

I and III only
II and III only
Any two of the three
All I, II and III

Correct Answer: II and III only

Explanation:

From above given statement , we can see that
I. Perimeter of the rectangular hall = 2 ( length + breadth ) = 76 m
⇒ 2 ( L + B ) = 76
∴ L+ B = 38
II. Area of the hall = 336 m²
⇒ length x breadth = 336 m²
III. Cost of flooring per square metre = $550.
Combining (II) and (III),
Total cost = Area of the hall x Cost of flooring per square metre
= 336 × 550 = $184800.

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