What is the common ratio between successive terms in the sequence?

What is the measure of angle 1? a.28 b.152 c.168 d.64

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units