SOLUTION: Find the total area of four walls in each of the rectangular rooms having the following dimensions: Length=10m,breadth=5m,height=4m Answer is 120 Plz tell me how I tried it but

Algebra ->  Rectangles -> SOLUTION: Find the total area of four walls in each of the rectangular rooms having the following dimensions: Length=10m,breadth=5m,height=4m Answer is 120 Plz tell me how I tried it but       Log On


   

Question 945643: Find the total area of four walls in each of the rectangular rooms having the following dimensions:
Length=10m,breadth=5m,height=4m
Answer is 120
Plz tell me how I tried it but failed
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
One wall's area = (length)*(height) = 10*4 = 40 square meters

The parallel wall on the opposite side is also 40 square meters
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Other wall's area = (breadth)*(height) = 5*4 = 20 square meters

The parallel wall on the opposite side is also 20 square meters
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Add the areas: 40+40+20+20 = 120

So that's why the answer is 120 square meters