Find the volume of a right circular cone that has a height of 18.9 in and a base with a circumference of 15 in. Round your answer to the nearest tenth of a cubic inch.

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?