Day 146: CDS Maths

1. A.
   $\frac{\sqrt{a^2 + b^2 + c^2}}{2}$
2. B.
   $\frac{\sqrt{a^2b^2 + b^2c^2 + c^2a^2}}{2}$
3. C.
   $\frac{a(b + c)}{2}$
4. D.
   $\frac{\sqrt{3(a^2b^2 + b^2c^2 + c^2a^2)}}{2}$

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1. A.
   126 $\text{cm}^2$
2. B.
   124 $\text{cm}^2$
3. C.
   122 $\text{cm}^2$
4. D.
   120 $\text{cm}^2$

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1. A.
   300 $\text{cm}^2$
2. B.
   306 $\text{cm}^2$
3. C.
   312 $\text{cm}^2$
4. D.
   316 $\text{cm}^2$

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1. A.
   4 cm
2. B.
   5 cm
3. C.
   6 cm
4. D.
   7 cm

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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.
   $\frac{1}{2}$
2. B.
   1
3. C.
   2
4. D.
   3

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1. A.
   $-1$
2. B.
   0
3. C.
   1
4. D.
   3

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