Question

the length and breath of a metal sheet are $2.325m$ and $3.142m$ respectively. What is the area of this sheet using proper number of significant figures

• A. $7.30515m^2$
• B. $7.3051m^2$
• C. $7.305m^2$
• D. $7.31m^2$

Answer 1

The correct option is A $7.30515m^2$

$\begin{array}{c}\text{Given}\to \text{A metal sheet with -}\\ \text{length}=2.325m\text{Bread}th=3.142m.\end{array}$

$\text{Area}=\ell \times b$

$\begin{array}{cc}\text{Area}& =\left(2.325m\right)\times \left(3.142\right)m\\ \text{Area}& =7.305m^2\end{array}$

$\begin{array}{c}\text{In multiplication the significant figures after the decimal}\\ \text{is same to the significant figures in the multiples (Lowest).}\end{array}$