a room is 13m long 11 metre wide and 8 metre high what will be the expenses of colouring the walls @ 25 paise per metre square.
Solve this question I'm little bit confused
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Imagine standing in an empty hall with arbitrary lengths of sides. Assume the dimensions are 13×11×8. This means you gotta get 4 walls painted, two of which have dimensions 13×8 m² and two have dimensions 11×8 m², So total area to be painted = 2(13×8) + 2(11×8) = 384 m²
Cost of painting 1 m² = 25 paise = 0.25 rupees.
Cost of painting 384 m² = 96 rupees. Pretty cheep to paint a room, no?
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Answer:
₹96
Step-by-step explanation:
area of four walls =2×h(l+b)
= 2×8(13+11)
=2×8×24
=48×8
cost of colouring =25p
=384×25
=9600
=₹96
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