## Elementary Geometry for College Students (5th Edition)

r = 4 in. slant height = 8 in. h $\approx$ 6,9 ft
Slant height = 2 r Total area = $\pi$ $r^{2}$ + $\pi$ r (slant height) Total area = $\pi$ $r^{2}$ + $\pi$ r (2 r) Total area = $\pi$ $r^{2} + 2 \pi$ $r^{2}$ Total area = 3 $\pi$ $r^{2}$ 48 $\pi$ $in.^{2}$ = 3 $\pi$ $r^{2}$ $r^{2}$ = 16 $in.^{2}$ r = 4 in. slant height = 8 in. h = $\sqrt (slant height)^{2} - r^{2}$ h = $\sqrt 64 ft^{2} - 16 ft^{2}$ h $\approx$ 6,9 ft