Question

The perimeter of a rectangle is 30cm. If its breadth is 3cm then its length is​

Answer 1

Answer:

⇒Let w = breath

⇒l = w + 3

⇒P = 2l + 2w

⇒30 = 2( w + 3 ) + 2w

⇒30 = 2w + 6 + 2w

⇒30 = 4w + 6

⇒4w = 24

⇒w = 6

⇒l = w + 3

⇒l = 9

⇒30 = 2(9) + 2(6)

⇒30 = 18 + 12

⇒L = 9

⇒W = 6

Step-by-step explanation:

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Answer 2

Answer:

length is 12cm

Step-by-step explanation:

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