Question

If a you double the length of a rectangle but keep the breadth the same what happens to the perimeter

Answer 1

Answer:

Perimeter of triangle would increase by 66.67 percent.

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Answer 2

Step-by-step explanation:

Perimeter:

The summation of all the sides of any particular geometry is known as perimeter.

Now as in our case, the geometry of rectangle is incorporated, thus it is clear that rectangle possesses four sides have opposite sides to be equal, thus if 'l' represents length and 'b' represents breath then by the definition of perimeter:

Perimeter = P = l+b+l+b

P = 2l+2b.

Now, if only length is doubled that simply the new length say 'L' would be:

L = 2l

And new perimeter would become:

P = 2L + 2b

And, put L=2l

P = 4l+2b.

Or;

P = 2l+2l+2b

And we know that, 2l+2b was the old one;

P = P(old) + 2I.

Thus the perimeter increases by '2l'