Question

Find the perimeter of a rectangle whose length and breadth are (i) 8 cm, 5 cm (ii) 20 cm, 25 cm (iii) 4 cm, 3.5 cm (iv) 40 cm cm ,0.3 m​

Answer 1

Answer:

Perimeter = 2 ( l + b )

i ) 2 ( 8 + 5 )

= 2 ( 13 )

= 26

ii ) 2 ( 20 + 25 )

= 2 ( 45 )

= 90

iii ) 2 ( 4 + 3.5 )

= 2 ( 7.5 )

= 15

iv ) 0.3 m = 30 cm

2 ( 40 + 30 )

= 2 ( 70 )

= 140