Question

the radius of the circular ends of a frustum of height 12cm are 15cm and 6cm respectively,find the lateral surface area and total surface area of the frustum​

Answer 1

Answer:

Step-by-step explanation:

Radius of the bigger circle = R = 14 cm

Radius of the smaller circle = r = 6 cm

Height of the frustum = h = 6 cm

Slant height of frustum = l =

Lateral surface area of frustum = π (R + r) l

= 628.57 cm2

Total surface area = Lateral surface area + π R2 + π r2