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The perimeter of a rectangular floor is 40 m and it is 8 m board find its area . plz do fast
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Jun 19, 2022
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The perimeter of a rectangular floor is 40 m and it is 8 m board find its area
.
plz do fast
Mathematics
college
Christopher DuBois
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Christopher DuBois
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rectangle is x, then 5x−4 be the length of the rectangle.
Perimeter of rectangle =2(l+b)
⇒40=2(l+b)
⇒40=2(5x−4+x)
⇒40=12x−8
⇒12x=40+8
⇒12x=48
⇒x=
12
48
⇒x=4
Breadth =4 meters
Hence, length =5×4−4=20−4=16m
Therefore, area of rectangle =lb=16×4=64m
Donmelchior
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Jun 26, 2022
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Donmelchior
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