31 . একটি বৃত্তের ব্যাস 26 সে.মি. হলে এর পরিধি কত? 

• A. 13π সেমি
• B. 26π সেমি
• C. 52π সেমি
• D. 39π সেমি

Answer: Option B

Explanation:

• A. $4+4\sqrt{3}$
• B. $5+6\sqrt{3}$
• C. $10+9\sqrt{3}$
• D. $10+6\sqrt{3}$

Answer: Option D

Explanation:

• A. $\frac{100x}{100+P}$
• B. $\frac{100P}{100+Px}$
• C. $\frac{100}{100x+P}$
• D. $\frac{100P}{100+x}$

Answer: Option D

Explanation:

• A. 3
• B. 4
• C. 5
• D. 6

Answer: Option C

Explanation:

• A. 17x
• B. 17
• C. x
• D. 1

Answer: Option C

Explanation:

• A. (a+b+c)(a-b+c)
• B. (a-b-c)(a-b+c)
• C. (a-b-c)(a+b-c)
• D. (a+b+c)(a-b-c)

Answer: Option B

Explanation:

• A. 16
• B. 8
• C. 34
• D. 12

Answer: Option B

Explanation:

• A. $\frac{\sqrt{3}}{2}$
• B. $\frac{1}{\sqrt{2}}$
• C. $\frac{1}{2}$
• D. $1$

Answer: Option C

Explanation:

• A. 0.1
• B. 0.01
• C. 0.001
• D. 0.0001

Answer: Option D

Explanation:

• A. $a>0$
• B. $a \mathrm{Not}=1$
• C. $a>0,a \mathrm{Not}=1$
• D. $a \mathrm{Not}=1,a>2$

Answer: Option C

Explanation:

• A. 25
• B. 29
• C. 28
• D. 27

Answer: Option B

Explanation:

• A. 2
• B. 1
• C. -2
• D. -1

Answer: Option B

Explanation:

• A. $\frac{49}{9}$
• B. $\frac{14}{9}$
• C. $\frac{7}{3}$
• D. $7$

Answer: Option A

Explanation:

• A. $\frac{4}{5}$
• B. $\frac{3}{5}$
• C. $\frac{3}{4}$
• D. $\frac{4}{5}$

Answer: Option B

Explanation:

• A. $\frac{x}{y}$ ঘণ্টা
• B. $\frac{y}{x}$
• C. $xy$
• D. কোনটিই নয়

Answer: Option A

Explanation: