Question

the outer surface area of a cue of edge 5m is painted. if the cost of painting is Rs.1 per 100 sq cm then the total cost of painting is
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Answer 1

Answer:

Given the side of the cube =6m

TSA of the cube =6×(side)

2

=6(6)

2

=6×36=216m

2

The cost of painting is Rs.2 per 100cm

2

∴ cost of 1cm

2

=

100

2

=Rs.0.02

we know that 1m

2

=10000cm

2

216m

2

=2160000cm

2

Hence total cost of painting the cube =2160000×0.02=Rs.43200