Question

18. The ratio of length and breadth of a rectangular shape is 3:2 Its perimeter is 50cm. what is the length.​

Answer 1

Answer:

length = 15cm

Step-by-step explanation:

Let the length of the rectangle be 3x cm and that of the breadth be 2x cm.

Then, the ratio of the length to the breadth is 3 : 2.

We know that perimeter of a rectangle = 2(l + b)

= 2(3x + 2x)cm = 10x cm

But perimeter 50cm (given).

∴ 10x = 50

⇒ x = 50/10 = 5

∴ length = 3x cm = (3 × 5)cm = 15cm

breadth = 2x cm = (2 × 5)cm = 10cm