Question

The perimeter of a rectangle is 20 centimetres. The length is 6centimeters.

Answer 1

Answer:

Perimeter =20cm

Length =6

Breath = X

P= 2(l+b)

20 =2(6+x)

20=12+2x

20-12=2x

8=2x

x=8/2

x=4

Step-by-step explanation:

Answer 2

Answer:

The Width is 4cm

The Area is 24cm²

Step-by-step explanation:

2(6cm+xcm)=20

12+2x=20

(collect like terms)

2x=20-12

2x=8

(divide both sides by the coefficient of x)

2x=8

2 2

x=4cm is our width

so for the area our formular is L*B=6*4=24cm²