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 figures should be

• A. 1 X 10² cm³
• B. 2 X 10² cm³
• C. 1.763 X 10² cm³
• D. None of these

Answer 1

The correct option is B 2 X 10² cm³

Volume V = l $\times$ b $\times$ t

= 12 $\times$ 6 $\times$ 2.45 = 176.4 $c{m}^3$

V = 176.4 $\times {10}^{2}c{m}^3$

Since, the minimum number of significant figure is one in breadth, hence volume will also contain only one significant figure. Hence, V = 2 $\times {10}^{2}c{m}^3.$