Sarah would like to build a marvelous rectangular frame. the dimensions of the frame are
unknown, but the perimeter of the frame must be 34 yards. the length of the frame is 3
more than the width. what are the dimensions of the frame?

Step-by-step explanation:

   Let us assume the length of the frame to be and the breadth to be .

   The perimeter is given to be 34 yards. The perimeter of a rectangle is given by .

   Also, it is given that length is 3 more than the breadth. So,

Substituting in this equation,

∴ The length of the frame is 10 yards and breadth is 7 yards.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have