A door-frame of dimensions 3 m × 2 m is fixed on the wall of dimension 10 m × 10 m. Find the total labour charges for painting the wall if the labour charges for painting 1 square metre of the wall is ` 3.25 rupee.
step by step explanation please
Answers
Answer:
- The dimensions of the door frame = 3 m × 2 m
- The dimensions of the wall = 10 m × 10 m
=> Area of the wall = length x breadth
= 10 x 10
= 100 sq. m
=> Area of the door frame = length x breadth
= 3 x 2
= 6 sq. m
=> area of the part of the wall to be painted
= area of the wall - area of the door frame
= 100 - 6
= 94 sq. m
( wall can be painted only where the door frame is absent. so, the area covered by the door frame on the wall is excluded. )
COST OF PAINTING :-
for 1 sq m the labor charges = 3.25 rs
for 94 sq. m the labor would charge = 3.25 x 94
= 305.5 rs.
The total labor charges for painting the wall is 305.5 Rs. (Ans
Answer:
area of door =3×2=6
area of wall=10×10=100
area of remaining part for painting =area of wall -area of door.
=100-6
=94
Labour charge for painting 94sq metres =94×3.25
=305.5
so rs305.5 is required to paint the wall.
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Step-by-step explanation:
Painting of the wall has to be done excluding the area of the door.
Area of the door = L × b
= 3 × 2m² = 6m²
Area of wall including door = side × side = 10 m ×10 m = 100m²
Area of wall excluding door = (100–6) m² = 92m²
Total labour charges = Rs3.25 × 94
= Rs 305.5
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