Question

The internal measures of a cuboidal room are14mx10mx8m.find the total cost of whitewashing the four walls and ceiling of the room, if the cost of whitewashing is rs. 15perm2

Answer 1

Step-by-step explanation:

l=14

b=10

h=8cm

total area of white washing =CSA OF cuboid+area of ceiling

=2H (L+B)+2 (L+B)

=2(L+B)(H+1)

=2 (14 +10) (8+1)

=2×24×9

=432 cm square meter

cost of white wash =432×15

= rupees 6840

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