avavackity
30.11.2019 •
Mathematics
The surface area of a cone is 25.6π in2 and the slant height is 2.4 in. what is the radius of the cone?
a. 2 in.
b. 1.2 in.
c. 4 in.
d. 5 in.
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Ответ:
(2.5 + 4)^2
Remember that parenthesis should go first: 2.5 + 4 = 6.5
Now square that. (6.5)^2 = 42.25
The solution is 42.25