Question

Perimeter of a rectangle is 40cm. If its length is 15cm, then its breadth is​

Answer 1

Step-by-step explanation:

perimeter of rectangle = 40 centimeter

length of a rectangle = 15 centimeter

let the breadth of a rectangle be x

perimeter=2(Length +breadth)

40=2×(15+x)

40÷2=15+x

20=15+x

20-15=x

x=20-15

x=5cm

verification

length=15cm

breadth=5cm

perimeter= 2×(length+breadth)

perimeter= 2×(15+5)

perimeter=2×20

perimeter=40cm

hence verified

Answer 2

Step-by-step explanation:

perimeter of the rectangle=40cm

length=15cm

breadth=?

perimeter of the rectangle = length (l) ×breadth (b)

40 = 15 ×b

40-15 =b

25 =b

therefore, the breadth (b)of the rectangle = 25 cm