I need help asap please

Answer for #5: C

Step-by-step explanation: The diagonal of the square is the diameter of the circle.

The diagonal of the square is always: side and in this square the side is 7cm because is 7.

This means the diagonal is 7 and since the diagonal is the diameter of the circle, 7 needs to be divided by 2 to equal the radius, half of the diameter.

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