the perimeter of a rectangle is 42cm and its area is 20sq.cm.what is the sum of length and breadth?find length and breadth
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Answer: 21 cm
Step-by-step explanation:
see this is very easy
we are given perimeter = 42
which is
2(l+b) = 42
we have to find l + b (divide 2 on both sides)
which is
=> l + b = 42/2
=> l + b = 21
sum of length and breadth = 21 cm
frnd18:
also find length and breadth
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