Question

find the cost of painting a cubical box of side 6.8 at the rate of rupees 82/- per square meter​

Answer 1

Given: Side of the cube (a) = 3 m

∴ Surface Area of Cube = 6a2 = 6 x 3 x 3 = 54 sq. cm

Now, Cost of painting the cubical box of 1 sq. m = Rs. 2

∴ Cost of painting the cubical box of 54 sq. m = 54 x 2 = Rs. 108