A right circular cone has a slant height of 10 m and a height of 8 m. Calculate the surface area of its curved surface.
A. 30 m2
B. 40 m2
C. 60 m2
D. 80 m2
Answer:C
A right circular cone has a slant height of 10 m and a height of 8 m. Calculate the surface area of its curved surface.
A. 30 m2 B. 40 m2 C. 60 m2 D. 80 m2
Explanation: l = 10 m,,,,,,,,,,,,,,,h = 8 metres,As a result, r = l2 - h2 = (10)2 - 82 = 6 metres.rl = ( x 6 x 10) m2 = 60 m2 Curved surface area.