0.4 Rahul wants to paint the outside of a cabinet of measure 1m x 2m x 1.5m. How much
surface area of cabinet did he cover if he painted all except the bottom?
Answers
Answered by
22
We know,
C.S.A=2(l+b)h
=2(1+2)1.5
=2×3×1.5
=9m^2
Area for top=l×b
=1×2
=2m^2
Total area required=2+9
=11m^2
C.S.A=2(l+b)h
=2(1+2)1.5
=2×3×1.5
=9m^2
Area for top=l×b
=1×2
=2m^2
Total area required=2+9
=11m^2
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Abhirajyaduvanshi:
13
My answer is 11 only
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13
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Answered by
37
Solution :-
Given :
Rahul wants to paint the outside of a cabinet of measure 1m × 2m × 1.5m.
He painted all except the bottom.
Find the total surface area of cabinet :-
T.S.A = 2(lb + bh + lh) sq. units
= 2(1 × 2 + 2 × 1.5 + 1 × 1.5) m²
= 2(2 + 3 + 1.5) m²
= 2 × 6.5 m²
= 13 m²
Find the area of bottom of cabinet :-
Area = (l × b) sq. units
= (1 × 2) m²
= 2 m²
Area of cabinet painted = T.S.A - Area of bottom
= (13 - 2) m²
= 11 m²
Hence,
He did paint 11 m² of cabinet.
thanks :)
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