Question

The perimeter of a rectangle is 120cm.if length is 40cm.find its breadth and surface area of the planck

Answer 1

Answer:

800 square cm.

Step-by-step explanation:

Perimeter of rectangle = $2(Length+ Breadth)$

Since we are given a perimeter = 120 cm

Length = 40 cm

$120=2(40 + Breadth)$

$60=(40+ Breadth)$

$20=Breadth$

Now Area = Length * Breadth

                 = 40*20 = 800

Thus the area is 800 square cm.

Answer 2

Answer:

:

800 square cm.

Step-by-step explanation:

Perimeter of rectangle = 2(Length+ Breadth)2(Length+Breadth)

Since we are given a perimeter = 120 cm

Length = 40 cm

120=2(40 + Breadth)120=2(40+Breadth)

60=(40+ Breadth)60=(40+Breadth)

20=Breadth20=Breadth

Now Area = Length * Breadth

= 40*20 = 800

Thus the area is 800 square cm.