The base diameter and the height of a cone are both equal to x units. which expression represents the volume of the cone, in cubic units? πx2 2πx3 πx2 πx3

we know that

Volume of the cone=(1/3)*pi*r²*h

where

r is the radius

h is the height

in this problem

diameter=x units> r=x/2 units

h=x units

so

Volume of the cone=(1/3)*pi*( x/2)²*x>(1/12)*pi*x³ units³

the answer is

the volume of the cone, in cubic units is (1/12)*pi*x³ units³

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

55

step-by-step explanation: