Question

the perimeter of a rectangular cardboard is 96cm, if its breadth is 18cm, find the length and area of the cardboard​

Answer 1

Answer:

perimeter= 2L+2B

96=2L +2(18)

96=2L+36

96-36 =2L

60=2L

or 2L =60

L = 60÷2

or L=30cm

Answer 2

Answer:

Length : 30cm

Area = 540cm²

Step-by-step explanation:

breadth : 18cm

Length : x

perimeter := 2(length+breadth) = 96cm

= 2(x+18) = 96cm = 2x+36= 96

2x = 96-36 = 60

x = 60/2

x= 30

Length = 30 cm

Now Area :

Area = Length × Breadth

= 30 × 18

= 540cm²