If the radii of circular ends of a frustum of a cone are 20 cm and 12 cm and its height is 6 cm, then the slant height of frustum (in is:
A. 10
B. 8
C. 12
D. 15
Answer:A
If the radii of circular ends of a frustum of a cone are 20 cm and 12 cm and its height is 6 cm, then the slant height of frustum (in is:
A. 10 B. 8 C. 12 D. 15