the area of a rectangular plot is 616 square metre and the and its breadth is 22 M find the length of a plot and the cost of fencing at the rate of 7.50 per metre
Answers
Length × Breadth= 616
L × 22= 616
L =616/22
L = 28
Perimeter of rectangle = 2(l+b)
=> 2× (28+22)
=> 2×50
=> 100 m
Cost of fencing = 7.50×100
=750
As we have provided with the are therefore we can use the area formula :
lxb=Area
Area=616sq.m
Breadth,b=22m
Therefore
Length, l =Area/Breadth
=616/22
=28m
Therefore the length of the rectangular plot is 28m.
Now the plot is to be fenced therefore the perimeter should be calculated as fence is put on the boundaries of the plot.
Therefore formulae for perimeter of a rectangle =2(l+b)
=2(28+22)=2(50)=100m
Now rate of fencing is Rs. 7.50 per metre. That means if fencing us done in metre the cost will be Rs. 7.50
Therefore fencing of the whole plot
= perimeter x rate of fencing
=100 x 7.50
=Rs. 750.0
Therefore the cost for fencing the whole plot is 750 rupees.
Hope you would have been understand the steps and formulas used if still you have doubts you can ask in the comments section and also don't forget mark my answer as the brainliest.