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Q.  The length and breadth of a field are 450 mts and 250 mts. A boundary wall is to be built round the field. One meter length of wall requires 200 bricks. How many bricks should be purchased for this purpose ? 

Dear student
Your question is not clear and appears to be incomplete.Data is insufficient to find the area of 4 walls as formula for calculating the area of 4 walls is given by: 2hl+b where l=length,b=breadth,h=height.
. Recheck your question and please be a little specific so that we can provide you with some meaningful help. Looking forward to hear from you again!
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The length of the field = 450 m
The breadth of the field = 250 m
The bricks require to build 1 m length = 200 bricks
So how many bricks he should purchase = ?
he should purchase = 200*450+200*250
                                = a*b+a*c = a*(b+c)
                               =  200*(450+250)
                               = 200*700
                               = 1400
Therefore he should purchase 1400 bricks.
regards
may this helps!
  • 2
length of the field=450m
breadth of the field=250m
bricks require to build 1m length=200 bricks
so,how many bricks he should purchase=?
he should purchase=200*450+200*250
                              =a*b+a*c=a*[b+c]
                              =200*[450+250]
                              =200*700
                              =1400
so,he should purchase 1400 bricks.
 
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