Day 348: CDS Maths

1. A.
   1, 2 and 3
2. B.
   1, 2 and 4
3. C.
   2, 3 and 4
4. D.
   1, 3 and 4

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1. A.
   $\frac{\sqrt{2}}{3} a^2$ square units
2. B.
   $\frac{3\sqrt{3}}{2} a^2$ square units
3. C.
   $\frac{1}{3} a^2$ square units
4. D.
   $\frac{\sqrt{3}}{2} a^2$ square units

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1. A.
   1 only
2. B.
   2 only
3. C.
   Both 1 and 2
4. D.
   Neither 1 nor 2

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1. A.
   $D(\sqrt{2} - 1)$
2. B.
   $D(\sqrt{2} + 1)$
3. C.
   $D(\sqrt{2} + 2)$
4. D.
   $D(2 - \sqrt{2})$

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1. A.
   10
2. B.
   20
3. C.
   21
4. D.
   25

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