What is the surface area of a sphere with a radius of 14 units? a. 449 units2 b. 784 units2 c. 784 units2 d. 288 units2

Step-by-step explanation:

we know that

The surface area of a sphere is equal to

we have

substitute

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

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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