Question

A container of side 3.5m is to be painted both inside and outside. find the area to be painted and the total cost of painting it at the rate of ` 75 per square meter.

Answer 1

I HOPE THIS WILL HELP

Answer 2

Area -

$12a {}^{2} \\ 12 \times 3.5 \times 3.5 = 147 \\ \\ total \: cost = 147 \times 75 = 11025$