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WASSCE
A rectangular piece of iron measuring 4cm by 3cm at 20°C is heated until its temperature increases by 100°C. Calculate the new area of the metal.
[Linear expansivity of iron is 1.2 × 10-5K-1]
[Linear expansivity of iron is 1.2 × 10-5K-1]
A.
12.0144 cm2
B.
12.0346 cm2
C.
12.0288 cm2
D.
12.0173 cm2
Answer: C
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