Question

The perimeter of rectangle is 20cm. If the length of rectangle is 6cm, then its breadth will be: *​

Answer 1

Answer:

breadth - 4cm

Step-by-step explanation:

p = 2 ( l + b )

  = 2 ( 6 + b )

p = 12 + 2b                      (P = 20cm)

20 = 12 + 2b

∴ 20 - 12 = 2b

∴ 2b = 20 - 12

∴ 2b = 8

∴ b = $\frac{8}{2}$

∴ b = 4

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