0 0 votes A wooden box (open at the top) of thickness $0.5\:\text{cm}$, length $21\:\text{cm}$, width $11\:\text{cm}$ and height $6\:\text{cm}$ is painted on the inside. The expenses of painting are Rs. $70$. What is the rate of painting per square centimetres? $\text{Re}\;0.7$ $\text{Re}\;0.5$ $\text{Re}\;0.1$ $\text{Re}\;0.2$ Quantitative Aptitude cat2016 quantitative-aptitude mensuration + – go_editor 14.2k points 1.4k views answer comment Share Follow Print 0 reply Please log in or register to add a comment.