An artist creates a cone-shaped sculpture for an art exhibit. if the sculpture is 7 feet tall and has a base with a circumference of 23.236 feet, what is the volume of the sculpture? use 3.14 for pi

Answer! if you don’t mind, can you explain

8.74 rounded to the nearest whole number

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15