Question

a cylinder with radius 14cm is closed at one end by a 48 cm high cone and at the other end by a hemisphere. if the height of the cylinder is 22cm find the total surface area of the article​

Answer 1

Answer:

r=7 cm

l (slant height)= h (height of cylinder)=4 cm

T.S.A of the figure= C.S.A of Cone+C.S.A of cylinder +C.S.A of hemisphere.

CSA of cone: πrl=(3.14)×(7cm)×(4cm)=87.92 cm ²

CSA ofcylinder2πrh=(2)×(3.14)×(7cm)×(4cm)=175.84 cm ²

CSA of hemisphere: 2πr²

=(2)×(3.14)×(7cm) ²

=307.72 cm²Adding all: TSA of figure= 571.48 cm