If the radius of a circle is 3.12 inches, what is the approximate area if you use 3.14 for and the area is rounded to the nearest tenth? a. 19.5 square inches b. 19.6 square inches c. 30.5 square inches d. 30.6 square inches

the answer is b.)

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answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere