Question

the perimeter of a rectangular card is 400 mm and its length is 6 cm .what is its breadth?​

Answer 1

Answer:

perimeter =2(l+b )

40= 2(6+b )

40÷2=6+b

20-6=b

14 =b

therefore breadth is equal to 14

hope this helps u

Answer 2

Answer:

PERIMETER = 2(L+B)

Step-by-step explanation:

GIVEN,

PERIMETER = 400mm =40cm

LENGTH =6cm

so,

=> P =2(l+b)

=>40 =2(6+b)

=>40 =12+2b

=>-2b=12- 40

=>-2b=-28(minus and minus cancel)

=> b = 28/2

then,

b = 14

please mark as a brainlisttttt

follow me