Question

The approximate value of $\sqrt[3]{28}$ is

• A. $3.0037$
• B. $3.037$
• C. $3.0086$
• D. $3.37$

Answer 1

Answer: (B)

Let $y=\sqrt[3]{28}$
Taking log on both sides, we get
$\log y=\frac{1}{3}\log 28$
$=\frac{1}{3}\times 1.4472$
$=0.4824$
$\Rightarrow y=$ antilog $(0.4824)$
$=3.037$ (approximately)