Question

The radius of the sphere is 1.41 cm. The volume of sphere to an appropriate number of significant figures will be:

• A. $11.7c{m}^3$
• B. $11.74c{m}^3$
• C. $12c{m}^3$
• D. $11.736c{m}^3$

Answer 1

The correct option is A $11.7c{m}^3$

Volume of sphere $V=\frac{4}{3}\pi R^3$

Or $V=\frac{4}{3}\pi \times (1.41{)}^3=11.736c{m}^3$

Since, radius has only 3 significant figures, so volume should have 3 significant figures.

So, $V=11.7c{m}^3$