The perimeter of a rectangle is 86cm. Its length is(5x-2)cm and breadth os (x+9)cm. Find its length and breadth
Answers
Answered by
30
perimeter = 86cm
2(l+b)=86
l+b=86÷2
5x-2+x+9=43
6x+7=43
6x=43-7
x=36÷6
x=6
l=5×6-2=28cm
b=6+9=15cm
2(l+b)=86
l+b=86÷2
5x-2+x+9=43
6x+7=43
6x=43-7
x=36÷6
x=6
l=5×6-2=28cm
b=6+9=15cm
Similar questions