Question

11) Find the perimeter of a rectangle with
length of 8 cm and a breadth of 5 cm.
12) The perimeter of a rectangular card is
28 cm. If the length of the card is 8 cm.
then, find its breadth.​

Answer 1

Step-by-step explanation:

perimeter=length ×breadth

=8×5

40cm2

12) perimeter=28cm

length=8cm

breadth=?

perimerer=length×breadth

28=8×breadth

28÷8=breadth

3.5cm=breadth

Answer 2

Answer:

2(l+b)

2(8+5)

2×13

62cm

12)28=2(l+b)

28=2(8+b)

28÷2=8+b

b=14-8=6cm