###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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# Volume and Surface Area - Problem 1

Alissa Fong
###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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Cones, spheres, and cylinders are all 3-dimensional shapes that include circles, so you'll see the math constant pi in the formulas. An exact answer is something written with pi in the answer, whereas if you use a decimal approximation like 3.14 for pi, then you'll have a decimal approximation. The key idea is choosing the appropriate formula, substituting in the given radius (and height if necessary,) and then evaluating using the order of operations.

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