70 cm
The dimensions of a cuboidal box are
30 cm x 60cm Find the total area
couper its side faces
and lattom face. Also find the cost its of
the paper at the rate of a 8 per cm²
af paper needed to
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Answer:
If the dimensions are 70 * 30 * 60
Step-by-step explanation:
Area to be covered = Total surface area of cuboid - Area of top face
Because top face is not included
= 2(lb + bh + hl) - lb
= 2(70*30 + 30*60 + 60*70) - 70*30
=2(2100 + 1800 + 4200) - 2100
=2(8100) - 2100
= 16200- 2100
= 14100 cm2
Cost to cover 1 cm2 = Rs 8
Cost to cover 14100 cm2 = Rs 8 ×14100
= Rs 112800
If the dimensions are different, you know the method now
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