What is 125x^9+64y^12 written as a sum of cubes

(5x^3+4y^4)(25x^6-20x^3y^4+16y^8)

Step-by-step explanation:

This one is confusing but you follow the formula a^3+b^3= (a+b)(a^2-ab+b^2).

3

step-by-step explanation:

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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