Question

Ek room ki lambai, chaudai or unchai kramsah 5 m. 4m. Or 3.5 m hai. Isme 4 windows 1.5*1.5 m ki hai. Or 2 door 2.5*1.2 m ke hai. Is room ki charo deewalo or chat ko color karane ke liye 0.50rupay/sqm ki dar se kitna kharch lagega.

Answer 1

Area of room painted=area of 4 walls +area of roof - area of 4 windows - area of 2 doors

= {2(5+4)×3.5 + 20 - 4×1.5×1.5 - 2×2.5×1.2 }×.50

={63 + 20 -9-6}×.50

=68 × .50

=₹34

Answer 2

here is your answer

area of room =l*b*h - l*b
=5*4*3.5 - 5*4
=70 -20
=50sqm

now,
=area of 4 window +area of 2 door
=4(1.5*1.5)+2(2.5*1.2)
=4*2.25+2*3
=9+6
=15 sqm

now,
=area to be coloured in room
=area of room - (area of 4 window +area of 2 door )
=50-15
= 35sqm

atq
1sqm=0.50$
35sqm=?

=35*0.50
=17.5$

there fore $17.5 is cost for colour room

hope this is helpful to you
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