Question

Example 3: The perimeter of a rectangle is 60 cm. If the length of the rectangle is 20 cm, find th
breadth of the rectangle.
Solution:​

Answer 1

The answer is 10

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Answer 2

Answer:

perimeter of rectangle=60cm

length=20cm

breadth=?

perimeter of rectangle=2(l+b)

60cm =2(20+b)

60cm =40+2b

2b =60-40

2b =20

2b = 20/2

b =10

breadth=10

then,

perimeter of rectangle=2(l+b)

=2(20+10)

=40+20

=60cm

so, ur answer is correct