Question

The perimeter of a rectangle is 90m .It is 30m long. It's breadth is?

Answer 1

Answer:

Step-by-step explanation:

Perimeter of rectangle=2(l+b)

90=2(30+b)

90/2=30+b

45=30+b

45-30=b

15=b

then,b=15.

Answer 2

Answer:

As we know that perimeter of rectangle=

2 (l+b)

2 (l+b)=90m

2 (30+b)=90m

30+b=90÷2

30+b=45

b=45-30

b=15m