Question

16. A rectangle has perimeter 300 cm and length 100 cm. Then its breadth
is​

Answer 1

Answer:

Breadth and area of rectangular sheet are 15cm and 525cm^2

Step-by-step explanation:

Perimeter of the rectangular sheet=100cm

⇒2(length+breadth)=100cm

⇒2(35+breadth)=100

⇒35+breadth=  

2

100

​  

 

35+breadth=50

breadth=50−35

breadth=15cm

Now, Area of rectangular sheet=length×breadth

35×15=525cm^2

breadth and area of rectangular sheet are 15cm and 525cm^2

Answer 2

$\sf\small\underline\green{Given:-}$

$\tt{\implies Perimeter\:_{(rectangle)}=300cm}$

$\tt{\implies Length\:_{(rectangle)}=100cm}$

$\sf\small\underline\green{To\:Find:-}$

$\tt{\implies Breadth\:_{(rectangle)}}$

$\sf\small\underline\green{Solution:-}$

According to the question, let us assume 'l' as length of the rectangle, 'b' as breadth of the rectangle.

$\sf\small\underline\green{Formula\:used:-}$

$\tt{\implies Perimeter\:_{(rectangle)}=2(l+b)}$

$\tt{\implies 2(100+b) = 300}$

$\tt{\implies 100+b =\dfrac{300}{2}}$

$\tt{\implies 100+b = 150}$

$\tt{\implies b = 150-100}$

$\tt{\implies b = 50}$

$\sf\large{Hence,}$

$\tt{\implies Breadth\:_{(rectangle)}=50cm}$