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A square tile has side 30 cm. How many of these tiles will cover a...

Mathematics
JAMB 2013

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

  • A. 720
  • B. 336
  • C. 420
  • D. 576
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Correct Answer: Option B
Explanation

Length of the tile = 30 cm = 0.3m

Area of the tile = 0.3 \(\times\) 0,3 = 0.09 m\(^2\)

Area of the room = (7.2 \(\times\) 4.2)m\(^2\)

Number of tiles = \(\frac{7.2 \times 4.2}{0.09}\)

= 336

There is an explanation video available below.


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Explanation Video

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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts