Question

length = 8 cm, breadth= ?, perimeter= 42 cm​

Answer 1

length = 8cm

breadth = ?

perimeter = 42 cm

Area of rectangle 2 (l+b)

42 = 2 ( 8 + b )

42/2 = 8 +b

21 -8=b

b= 13cm

length = 8cm

breadth = 13 cm

Answer 2

Answer:

Step-by-step explanation:

Given ,

perimeter = 42 cm

length = 8 cm

breadth = ?

A/Q

perimeter = 2( length + breath)

42  =        2( 8+ b)

42 =16 +2b

2b =42 -16

2b = 26

so, b = 26/2= 13

so Breadth = 13 cm

 Thank you