Question

a cube of side 3cm is to be painted what is the cost of painting if 12rs for 1 sq cm​

Answer 1

Answer:

answer is Rs 648

Step-by-step explanation:

first we find the area of cube = 6a^2

where side is (a)=3

then area= 6(3)^2

=54sq cm

the cost of 1sq cm =Rs 12

so the cost of painting =54×12 =Rs 648

Answer 2

Step-by-step explanation:

A cube has 6 side

1st we can take 1 square from the cube

1 side= 3cm

So, the area of that square is 9

The whole cube will be- 9×6= 54 sq cm

1 sq cm - 12₹ = 54×12

⇒ 648₹

∴ They want to pay 648₹ for painting