les 9 -
The area of a rectangle
m² if the length
3
3.4 m, find
wreath of the rectangle
baru
is 3
find the
Answers
Answered by
2
Answer:
Area of rectangle=640m2
l×b=640 ,length = x
x×b=640−−−− (i)
Perimeter = 104
2(x+b)=104
x+b=52
b640+b=52 by (i)
640+b2=52b
b2−52b+640=0
b2−32b−20b+640=0
b(b−32)−20(b−32)=0
(b−32)(b−20)=0
b=32,20
x=20,32
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