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OpenStudy (anonymous):
A cone has a base area of 45 in² and a lateral area which is 2.2 times bigger than the base area. The surface area of the cone is _____ in². 144 156 180 196
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OpenStudy (anonymous):
The total area is the base area plus the lateral area. You need to find the lateral area. If the lateral area is 2.2 times the base area, what is the lateral area?
OpenStudy (anonymous):
45*2.2?
OpenStudy (anonymous):
Yes. What is that?
OpenStudy (anonymous):
99
OpenStudy (anonymous):
So what's the total area?
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OpenStudy (anonymous):
45+99=144???
OpenStudy (anonymous):
Yep
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