Question

A piece of cake is cut in the shape of a sector of a circle of radius 7 cm. The thickness of the piece of cake in 9 cm. Find the curved surface area and the volume of the piece of the cake??(angle=120°)

Answer 1

Step-by-step explanation

• curved surface area =Ф /360*2pi rh

• =120/360*2*22/7*7*9
• =132 square cm
• NOW
• volume of a cake =120/360*pi*r^2*h
• =120/360*22/7*7*7*9
• =462 cube cm