Question

perimeter and length of a rectangle are 30cm and 9cm respectively. find its breadth. and solve it.​

Answer 1

Given:

perimeter P=30cm

length L=9 cm

B=?

P=2L+2B

30=2×9+2B

30=18+2B

30-18=2B

2B=12

B=12/2

B=6 cm

Hence breadth is 6 cm

Answer 2

The perimeter and length of a rectangle are given

Perimeter = 30cm

Length = 9 cm

• We have to find the breadth of the  rectangle

The formula of perimeter of rectangle is

Perimeter = 2 ( l + b )

Where l is length and b is breadth

30 = 2  ( 9 + b )

15 = 9 + b

b = 6

The breadth of the rectangle will be 6 cm.