Question

A thin wire is 20cm long is formed into a rectangle. If width of this rectangle is 4cm. What is it's length?​

Answer 1

Answer:

6

Step-by-step explanation:

length of wire=20 cm

width=4

length=(20-4x2)÷2

=(20-8)÷2

=12÷2

=6

Answer 2

Answer:

6cm

Step-by-step explanation:

Given : Perimeter = 20cm

Width = 4cm

Let length be x

Perimeter of a rectangle : 2 ( length + width )

20cm = 2 ( x + 4 )

20 ÷ 2 = x + 4

10 = x + 4

10 - 4 = x

6cm = x

Hence,length is 6cm