Question

Find the perimeter of the rectangle whose length is 12 cm and breadth is 90 mm

Answer 1

Answer:

perimeter of rectangle= 2(l+b)

= 2(120+90)

= 2 ( 210)

= 420 cm

1cm = 10mm

Answer 2

1 cm = 10 mm

l=120 mm b= 90 mm

perimeter =2 (l+ b)

=2 (120+90)

=2 (210)

= 420 mm or 42 cm