What is the perimeter , in feet , of the polygon 15,22,10,18,14,5,5,16

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?