Question

the length of the rectangle is 10 centimetre more than its breadth if the perimeter of a rectangle is 30 cm find the length and breadth of the rectangle the answer is Length-12.5 Bredth-2.5​

Answer 1

Explanation:

if you have the answer, why do you ask ?

anyway,

l = length

b = breadth

perimeter = 2×l + 2×b = 30 cm

l = b + 10

now we use this identity in the perimeter equation :

2×(b+10) + 2b = 30

2b + 20 + 2b = 30

4b = 10

b = 2.5 cm

l = b + 10 = 2.5 + 10 = 12.5 cm