Q: What is the decimal equivalent of 5%?
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A
420 cm2
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B
380 cm2
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C
480 cm2
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D
410 cm2
C
Answer:
C
Explanation:
Let length = X and breadth = Y. Then,
2 (X + Y) = 92 OR X + Y = 46 AND X^2 + Y^2 = (34)^2 = 1156.
Now, (X + Y)^2 = (46)^2
⇔ (X2 + Y2) + 2XY = 2116 ⇔ 1156 + 2XY = 2116
⇒ XY=480
∴ Area = XY = 480 cm2
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