What is the surface area of The Unisphere?
Something to Consider
Description from Daily Overview
The Unisphere is a spherical stainless steel representation of the Earth, located in Flushing Meadows-Corona Park in the New York City borough of Queens. Commissioned as part of the 1964 New York World’s Fair, the sculpture was dedicated to “man’s achievements on a shrinking globe in an expanding universe.”
Daily Overview / Satellite imagery courtesy of Digital Globe / Benjamin Grant
When Math Happens 
I have no idea how to do this problem. You’re given the diameter of the blue sphere, NOT the actual globe. Are we supposed to look that up? Please enlighten me on how to get the answer.
Hi Jeff,
This problem is only meant to be an estimation challenge. I don’t want students to have the needed information because I want them to focus on making a guess instead of getting the correct answer. That’s why I gave the diameter of the blue circle. Students can use that diameter to estimate the dimensions of the sphere.
Thanks for the comment!
This makes so much more sense now! Thank you for the explanation!