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Exemplo 9.51 de Prealgebra, 9.6 Solve Geometry Applications: Volume and Surface Area
Solve Geometry Applications: Volume and Surface Area: exemplo 9.51
Problema e solução em inglês, como no livro original.
A sphere has a radius inches. Find its ⓐ volume and ⓑ surface area.
Resolva no papel primeiro. Depois abra a solução um passo de cada vez e pare assim que conseguir terminar sozinho.
Solução
Step 1 is the same for both ⓐ and ⓑ, so we will show it just once.
Step 1. Read the problem. Draw the figure and label
it with the given information.ⓐ Step 2. Identify what you are looking for. the volume of the sphere Step 3. Name. Choose a variable to represent it. let V = volume Step 4. Translate.
Write the appropriate formula.Step 5. Solve. Step 6. Check: Double-check your math on a calculator. Step 7. Answer the question. The volume is approximately 904.32 cubic inches. ⓑ Step 2. Identify what you are looking for. the surface area of the cube Step 3. Name. Choose a variable to represent it. let S = surface area Step 4. Translate.
Write the appropriate formula.Step 5. Solve. Step 6. Check: Double-check your math on a calculator Step 7. Answer the question. The surface area is approximately 452.16 square inches.
Sua vez
O Try It do livro logo depois deste exemplo: mesma ideia, outros números. Só a resposta é dada.
Find the ⓐ volume and ⓑ surface area of a sphere with radius 3 centimeters.
Como foi?