Question

5. The length of a rectangle is twice of its breadth. Find the dimensions if the perimeter of the rectangle
is:
(a) 156 cm
(b) 219 cm
​

Answer 1

Answer:

ANSWER

Let the breadth of the rectangle is b cm.

So, the length of the rectangle is 2b cm.

We know that the perimeter of rectangle is

=2(l+b)

Since, perimeter of rectangle is 120 cm.

Therefore,

6b=120

b=20 cm

And l=40 cm

So, the area of rectangle is

=20×40=800 cm2

Hence, the length is 40 cm, breadth is 20 cm and area is 800 cm2.

Step-by-step explanation:

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Answer 2

Answer:

Let the breadth of the rectangle is b cm.

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm.

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm. Therefore,

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm. Therefore,6b=120

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm. Therefore,6b=120b=20 cm

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm. Therefore,6b=120b=20 cmAnd l=40 cm

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm. Therefore,6b=120b=20 cmAnd l=40 cmSo, the area of rectangle is

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm. Therefore,6b=120b=20 cmAnd l=40 cmSo, the area of rectangle is=20×40=800 cm2

Let the breadth of the rectangle is b cm.So, the length of the rectangle is 2b cm.We know that the perimeter of rectangle is=2(l+b)Since, perimeter of rectangle is 120 cm. Therefore,6b=120b=20 cmAnd l=40 cmSo, the area of rectangle is=20×40=800 cm2Hence, the length is 40 cm, breadth is 20 cm and area is 800 cm2.