Math, asked by aryan777, 1 year ago

find the area of rectangular plot whose breadth is 4.2 m and perimeter is 22m

Answers

Answered by nehame
19
perimeter=2×(l+b)
=2×(l+4.2)
22/2=l+4.2
11-4.2=l
l=6.8m
area=l×b
=6.8×4.2
=28.56m^2
Answered by AKshri
8

Let the length of plot =x m
The perimeter of plot = 2(l+b)
22=2(4. 2+x)
22=8. 4+2x
2x=22-8. 4
2x=13. 6
x=13. 6/2
x=6. 8m
Here the length is 6. 8m
Now the area of plot = length ×breadth
=4. 2×6. 8
=28. 56 square meters
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