JAMB Mathematics 2018 Objective — Question 30

Question 30 of 39 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2018 Objective paper, with the correct answer and a full explanation.

A square tile has side 30cm. How many of these tiles cover a rectangular floor of length 7.2m and width 4.2m?

A. 336
B. 720
C. 576
D. 756Correct

Explanation

Area of tile = 0.3×0.3 = 0.09m². Area of floor = 7.2×4.2 = 30.24m². Number of tiles = 30.24/0.09 = 336.

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