The circumference of the larger circle is 15.7 yards. find the circumference of the smaller circle.

Step-by-step explanation:

Method 1:

The formula of a circumference of a circle:

d - diameter

We have d = 4yd. Substitute:

Method 2:

Circles are similar. The scale of similarity of a smaller circle to a larger one is:

The ratio of the circumferences of similar figures is equal to the scale of similarity.

Therefore

           multiply both sides by 15.7

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following