Question

The perimeter of rectangle is 40 cm and
its lenath 12 cm then find its breadth​

Answer 1

Answer:

Given that

P = 40, l = 12

As we know that

Perimeter of Rectangle (P) = 2 * (length + breadth)

ie. P = 2*(l+b)

=> 40 = 2 * (12 + b)

=> 40 / 2 = [2*(12 + b)]/2 (Divide both side by 2)

=> 20 = 12 + b

=> 20 - 12 = 12 - 12 + b (Subtract 12 from both side)

=> 8 = b

=> b = 8

Ans: Breadth is 8cm

Answer 2

Given that

P = 40, l = 12

As we know that

Perimeter of Rectangle (P) = 2 * (length + breadth)

ie. P = 2*(l+b)

=> 40 = 2 * (12 + b)

=> 40 / 2 = [2*(12 + b)]/2 (Divide both side by 2)

=> 20 = 12 + b

=> 20 - 12 = 12 - 12 + b (Subtract 12 from both side)

=> 8 = b

=> b = 8

Ans: Breadth is 8cm

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