Question

what will be the breadth of a rectangle if perimeter is 30 cm length is 10 cm

Answer 1

Answer:

perimeter of a rectangle=2(l+b)

given length=10cm

perimeter= 30cm

therefore, 30cm= 2(10+breadth)

30/2= 10+ breadth

15=10+ breadth

breadth= 15-10=5

Step-by-step explanation:

breadth of the rectangle = 5cm

HOPE THIS WILL HELP YOU

Answer 2

your answer is 5.....

given perimeter of rectangle is 30cm...

perimeter of rectangle =2(l+b)

2(l+b) = 30cm

NOW SUBSTITUTE L = 10cm....

2(10+b) = 30cm

20 + 2b = 30cm

2b = 30 - 20

2b = 10

b = 10 / 2

b = 5

HENCE PROVED......

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