1/5x3/4x5/7 write your answer in simplest form

3/28

Step-by-step explanation:

Set them up like this:

and the 5's cancel each other out, leaving you with

Multiply straight across the top and straight across the bottom to get

When you reduce as much as possible before multiplying, the answer will automatically be in its reduced form.

b

step-by-step explanation:

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.