[50 POINTS + BRAINLEST]
Sand is poured to create a cone-shaped pile. After some time, the diameter of the pile is 12 in. and the height is 10 in. A little while later, the volume of the pile increases by 80%, and the diameter is 18 in. What is the exact volume of the pile of sand after the increase? What is the height of the pile after the increase?

If a • b*2 = 1.8 x 10*-7, and c•b/d = 7.2 x 10*-4, find the value of a•d*2/c*2

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Item 1 which question could the expression 1000n answer? let n = the number of gallons of gas used. how many miles per gallon did the car get driving 1000 miles? let n = the number of grams of food needed for each dog. how many grams of food are needed to feed 1000 dogs? let n = the number of people at the show. how many empty seats were there at the show if there are 1000 seats at the theater? let n = the number of seats at the theater. how many empty seats will there by if 1000 people come to the show?