Math, asked by hemanth123456, 1 year ago

please say me that two Qns

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Answers

Answered by nekkantimahalaxmi
0

Answer:


Step-by-step explanation:

Height of the first cone=OP=h=2cm

Radius r=3.5 cm

Slant height l= Sq root of( r^2 + h^2)

= Sq root (2^2+3^2)

=Sq root(4+12.25)

=Sq root(16.25)

=4.03

Curved surface area=pi.r.l

=22/7*3.5*4.03=44.34cm^2

Total surface area=pi*r*(r+l)

22/7*3.5(3.5+4.03)

=82.83cm^2

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