Perimeter of rectangle=2(l+b)
=2(12+57)cm
=2×69cm
=138cm
Answer:
area of rectangle ABCD
l×b
57cm×12cm=684
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Perimeter of rectangle=2(l+b)
=2(12+57)cm
=2×69cm
=138cm
Answer:
area of rectangle ABCD
l×b
57cm×12cm=684