Which has the bigger surface area? Jamal's, which is 3 by 3 by 4 ft, or Andy's, which is 4 by 2 by 5 ft and why?
1 answer:
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BA and BD are radii of the circle, so triangle ABD is isosceles. Then angles BDA and BAD are congruent, and the remaining (central) angle ABD has measure
Angles ABD and CBD are supplementary, so
and the answer is E.
