Direction: In the following questions, a statement of assertion is followed by a statement of re...

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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice.
a. Both assertion and reason are true and reason is the correct explanation of assertion.
b. Both assertion and reason are true but reason is not the correct explanation of assertion.
c. Assertion is true but reason is false.
d. Assertion is false but reason is true.
Assertion: If two identical solid cube of side \( 5 \mathrm{~cm} \) are joined end to end, then total surface area of the resulting cuboid is \( 300 \mathrm{~cm}^{2} \).
Reason: Total surface area of a cuboid is \( 2(\mathrm{lb}+\mathrm{bh} \) \( +\mathrm{hl}) \).
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