A circle has a circumference of 6. It has an arc of length of 1. What is the central angle of the arc, in degrees?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Can someone me with my math problem pls my teacher is on my back about this

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.