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Question
sir or ma,please help me figure-out a solution to this:(1)find the diameter of a circukar field whose area is 616m^2
(2)the volume of a cube is 512cm^3.find its total surface area.

Answer
"The area of a circular field is 616 m"
area = πr, where r is the radius
πr = 616
r = 616/π
r = √(616/π) = 196.1 m

diameter = 2r = 392.2 m
:::::
"The volume of a cube is 512 cm"
The length of an edge of the cube is ∛512 = 8 cm

Area of one face of the cube = 8 = 64 cm
A cube has six congruent faces, so the total surface area is 664 = 384 cm

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Janet Yang

Expertise

Word problems are my favorite type of math questions! I would not feel comfortable answering questions that require specialized knowledge (Physics, Statistics, etc.) because I have not studied these in depth.

Experience

I tutor students (fifth through twelfth grades) and am a Top Contributor on Yahoo!Answers with over 24,000 math solutions.

Publications
Co-author of An Outline of Scientific Writing: For Researchers With English as a Foreign Language.

Education/Credentials
I have a Bachelor's degree in Applied Mathematics from the University of California at Berkeley, and a Master of Business Administration degree from The Wharton School.

Past/Present Clients
George White Elementary School. Homework Help program at the Ridgewood Public Library, Ridgewood, NJ. Individual students.

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