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OpenStudy (anonymous):
a hemisphere has radius of 0.25m what is the surface area? a:2.3562 b:23562 c:0.58905 d:5890.49
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OpenStudy (campbell_st):
A hemisphere has 2 surfaces 1. surface area of a sphere is \[SA = 4\pi r^2\] so halve it for a hemisphere 2. a circle \[A = \pi r^2\] add them together
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