Math, asked by rockingprincess, 4 months ago

2. If the radii of the top and base of a cone frustum
are (a-b) cm and (a+b) cm respectively and the
slant height is 2a cm, then CSA of frustum of cone
is ........cm2
4art
8ал
4a²T
8a27

Answers

Answered by naseer151090

0

Answer:

Curved surface area =lπ×(R+r)

Diameter = radius/2

Radius, R = 20 cm, r = 8 cm

=3×15(20+8)

=3×15(28)

=3×420

=1,260cm2

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