Question

the perimeter of a rectangular sheet is 170 cm. If its breadth is 15 cm less than its length, find the length.
Also find its area ​

Answer 1

Answer:

hope it will help you

Step-by-step explanation:

170=2(l+b). (l=x &b=x-15)

170/2=x+x-15

85=2x-15

85+15=2x

100/2=x

50=x

so, l= 50cm and b= x-15 = 50-15= 35cm

Answer 2

Answer:

Given :

Perimeter of Rectangle = 170 cm.

Breadth = length - 15 cm

To find :

Length

Area of Rectangle

Formula :

Perimeter of Rectangle = 2 ( l + b )

Area of Rectangle = l × b.

Solution :

Perimeter of Rectangle = 2 ( l + b )

170 = 2 ( l + l -15)

170 = 2 ( 2l - 15 )

170 = 4 l- 30

200 = 4 l

Therefore, Length = 50 cm.

Breadth = Length - 15

= 50 - 15 = 35 cm.

Area of Rectangle = l × b

= 50 × 35

= 1750 Sq.cm