Question

the length of a rectangle is twice its breadth write an expression for its perimeter in terms of its breadth use expression to calculate the perimeter of a rectangle whose breadth is 5 units.

plus answer with explanation ​

Answer 1

Answer:

Perimeter (P) = 6×breadth

If breadth = 5 , then P= 30units

Step-by-step explanation:

Dimensions of a rectangle:

Let breadth (b) = x

Length (l) = 2x ,

Perimeter (P) = 2(l+b)

= 2(2x+x)

=2×3x

= 6x

If breadth (b)= x = 5 units,

then

Perimeter (P) = 6x

= 6×5

= 30 units

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Answer 2

Answer:

i dont know

Step-by-step explanation: