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oksano4ka [1.4K]
2 years ago
13

the length and breadth of a hall are 20m and 15m respectively. find the area of 4 Walls of the hall if the height of the hall is

10 m​
Mathematics
2 answers:
oksano4ka [1.4K]2 years ago
8 0

Answer:

300

Step-by-step explanation:

area=20*15=300

atroni [7]2 years ago
5 0

Answer: 700m^2

Step-by-step explanation:

length = 20m

breadth= 15m

so we use lateral surface area = 2(L+B) H

area of hall = 2(20+15)10

2×35×10 = 700m^2 ans

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Answer:

See explanation below

Step-by-step explanation:

BD - diagonal                                    Added Construction              

m∠CBD = m∠ADB            Alternate Interior Angles Theorem        

BD ≅ DB                                             Reflexive Property                  

m∠A = m∠C                          Opposite ∠'s Congruent Theorem

ΔABD ≅  ΔCDB                                     AAS or SAS                                    

BC ≅  DA                                                 CPCTC              

AC - diagonal                                             Added Construction    

m∠BCA = m∠CAD                   Alternate Interior Angles Theorem

AC ≅ CA                                                  Reflexive Property    

m∠B = m∠D                              Opposite ∠'s Congruent Theorem

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2 years ago
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shepuryov [24]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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Aliun [14]
For this case we model the problem as a rectangle.
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