A cone is on a hemisphere of radius 14 cm height of the cone 7 cm then find T.S.A of cone. urgent plz fast.
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given,
height of cone = 7 cm
radius = 14 cm
t.s.a of the resulting figure = l.s.a of cone + l.s.a of hemisphere
l..s.a of cone = πrl
l=√14+7 = 15.6 cm
⇒22/7×14×15.6 = 686.4 cm²
l.s.a of hemisphere = 2πr²
⇒2×22/7×(14)² = 1232 cm²
t.sa.a of cone = 1232+ 686.4 = 1928.4 cm²
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t.s.a of solid = c.s.a of cone+ c.s.a of hemisphere
= rl+2r²
=r( l+2r)
=22÷7×14(15.65+28) √r²+h² =l
= 22×2(43.65) 14²+7²=l
=44×43.65 l=15.65cm
=1920.70cm²
= rl+2r²
=r( l+2r)
=22÷7×14(15.65+28) √r²+h² =l
= 22×2(43.65) 14²+7²=l
=44×43.65 l=15.65cm
=1920.70cm²
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