Question

Rectangle made of 30cm long wire 4cm breadth what is the length

Answer 1

Answer:

Length=11cm

Step-by-step explanation:

P=30=2(l+b)

30=2(l+4)

30=2l+8

2l=30-8

2l=22

l=11

Answer 2

Answer:

11 cm

Step-by-step explanation:

length of wire=perimeter of rectangle=30 cm

breadth=4 cm

p=2(l+b)

therefore,

2(l+4)=30

l+4=30/2

l+4=15

l=15-4

l=11 cm