Question

The length, breadth and thickness of a block are given by l = 12 cm, b = 6 cm, and t = 2.45 cm. The volume of the block according to the idea of significant figure should be

• A. $1\times {10}^{2}c{m}^3$
• B. $2\times {10}^{2}c{m}^3$
• C. $1.763\times {10}^{2}c{m}^3$
• D. None of these

Answer 1

The correct option is B $2\times {10}^{2}c{m}^3$

Volume, $V=l\times b\times t=12\times 6\times 2.45$
$=176.4c{m}^3$
Or $V=1.764\times {10}^{2}c{m}^3$
Since, the minimum number of significant figure is one in breadth, hence volume will also contain only one significant figure. Hence, $V=2\times {10}^{2}c{m}^3$