Question

3) The perimeter of a rectangle is 60cm. The
length of the rectangle is more than double
it's breadth by 2. Find length and breadth.​

Answer 1

Answer:

length=20.67cm, breadth=9.33cm

Step-by-step explanation:

$let \: length = l \\ let \: breadth \: = b$

$perimeter = 2(l + b)$

$60 = 2(l + b) \\ l + b = 30$

From question, we get,

$l = 2b + 2$

$putting \: l = 2b + 2 \: in \: l + b = 30$

So,

$2b + 2 + b = 30 \\ 3b = 28 \\ b = 9.33cm$

So,

$l + b = 30 \\ l = 30 - b \\ l = 30 - 9.33 \\ l = 20.67cm$