Cone C and Cone D both have a height of 12 centimeters. The volume of Cone C is 125.6 cubic centimeters. The volume of Cone D is 9 times the volume of Cone C. About how many times longer is the radius of Cone D than the radius of Cone C? Round to the nearest whole number if necessary.

Select the correct answer and solve for y

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.

Which math statement does not contain a math variable ?