Question

perimiter of the rectangle is 50 cm and bredth is 20 cm find the length​

Answer 1

Answer:

Length of the rectangle is 5cm.

Given:

Perimeter of a rectangle = 50cm.

Breadth of the rectangle = 20cm.

To find:

Length of the rectangle.

Solution:

Let us assume that length of the rectangle is x cm.

Perimeter of the rectangle = 50cm.

=> 2(20+x)cm = 50cm

=> 40 + 2x = 50cm

=> 2x = 50cm - 40cm

=> 2x = 10cm

=> x = 10/2cm

=> x = 5cm.

Therefore, length of the rectangle is 5cm.

Verification:

Perimeter of rectangle = 2(l + b)

=> 50cm = 2(5 + 20)cm

=> 50cm = 2 × 25cm

=> 50cm = 50cm.

Here, LHS = RHS

Hence, verified.