Question

Find the cost of painting a wooden box which is in the shape of a cube of side $11cm$ at the of $50$paise per square cm.

Answer 1

Total surface area of cube $=6a^2$

Given slide $=11cm=a$

$=6\times {11}^2=6\times 121=726{cm}^2$

Cost of painting at $50$ paise per ${cm}^2$

i.e., $726\times 50=36300$ paise

$1$ Rupee $=100$ paise

? $=36300$ paise

i.e., $363$ rupees