Question

The perimeter of a rectangular sheet is 80 cm. If the length is 30 cm, Find its breadth. Also

find the area.​

Answer 1

Answer:

Let breadth be b.

Length, l =30cm

Perimeter = 80cm = 2(l+b)

l+b = 40 cm

b = 40cm - 30 cm = 10cm

Now, Area of rectangle = l*b = 30*10 = 300 cm²

Therefore, the rectangle's breadth is 10cm and area is 300 cm².

Answer 2

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Step-by-step explanation

perimeter of a rectangular sheet- 80

length- 30

Breadth= 80= 2* (l+b)

80= 2* ( 30+breadth)

80/2 = 30+ breadth

40= 30+breadth

40-30 = breadth

10= breadth

Now we have found the breadth so, we can find the area easily

Area of a rectangle= 30*10

                               = 300

So, the area of the rectangular sheet is 300.

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