The area of a rectangular room is 84 square metre . If the breadth of the room is 5meter less than its length , find the perimeter of the ANSWER FAST
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let the length be x
so,x*x-5=84
2x=84+5
x=89/2
x=44.5
x-5=44.5-5.0
x-5=39.5
peri. of rec.=2*(l+b)
so,2×(44.5+39.5)
2×84
=168
therefore the perimetre is 168m.
so,x*x-5=84
2x=84+5
x=89/2
x=44.5
x-5=44.5-5.0
x-5=39.5
peri. of rec.=2*(l+b)
so,2×(44.5+39.5)
2×84
=168
therefore the perimetre is 168m.
EINSTEIN1973:
sorry!wrong answer correct answers is : 38
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