Perimeter and area of square , rectangle , triangle 4th standard
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perimeter of square=4a (where 'a'=side)
area of square=s×s
perimeter of rectangle=2×(l+b) (where 'l'=length and 'b'=breadth)
area of rectangle=l×b
area of triangle=1/2×b×h (where 'h'=height)
perimeter of triangle=sum of all three sides
area of square=s×s
perimeter of rectangle=2×(l+b) (where 'l'=length and 'b'=breadth)
area of rectangle=l×b
area of triangle=1/2×b×h (where 'h'=height)
perimeter of triangle=sum of all three sides
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