alexandriasmith727
24.05.2021 •
Mathematics
The surface area of a cone is 55 (pi) cm. The radius is 5 cm. What is the slant height?
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Ответ:
SA = r*s*pi + r2*pi
55pi = 5*s*pi + (5)2pi
55pi = 5*s*pi + 25*pi
30pi = 5s*pi (subtracted 25pi from both sides)
s = 6 cm (divide both sides by 5pi, isolating s)
Solution: Slant height is 6 cm
Ответ: