Mathematics
JAMB 1983
On a square paper of length 2.524375cm is inscribed square diagram of length 0.524375cm. Find the area of the paper not covered by the diagram. correct to 3 significant figures.
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A.
6.00cm2
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B.
6.10cm2
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C.
6cmv
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D.
6.09cm2
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E.
4.00cm2
Correct Answer: Option B
Explanation
Area of the paper = area of square = L x B or S2
where s = S x k
Area of the paper = (2.524)2
area of the diagram = (0.524)2
area not covered = (2.524)2 - (0.524)2
= 6.370576 - 0.274576
= 6.096
= 6.10cm2 (2 s.f)
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