please say me that two Qns
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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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