The length of a rectangle is 5cm more than its breadth. If the perimeter of the rectangle is 40cm, find the length and breadth of the rectangle.
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Answered by
7
let, breadth ( b ) = x
length ( l ) = x + 5
perimeter = 2 ( l + b )
40 cm = 2 ( x +5+ x )
20 = 2x + 5
2x = 20 - 5
2x = 15
x = 7.5 cm.
x + 5 = 7.5 + 5 = 12.5 cm
length = 12.5 cm.
Breadth = 7.5 cm.
Answered by
3
Answer:
BREADTH=XCM
LENGTH = 5+XCM
PERIMETER=40CM
PERIMETER OF RECTANGLE IS 2[L+B]
2[X+5+X]=40CM
2[2X+5]=40CM
2X+5=40/2
2X=20-5
X=15/2
X=7.5
BREADTH=7.5CM
LENGTH=5=7.5
=12.5
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