Question

the base of a cone with radius 5 cm and height of 12 cm is hemispherical find the total surface area of the article (π=3.14)​

Answer 1

Answer:

iven,

slant height l =5cm

total surface area A =103.62cm2

Formulae:

l=h2+r2

A=πr(r+l)

⇒r=21l2+4πA−2l

⇒r=2152+4π103.62−25

⇒r=3.76

l2=h2+r2

⇒h2=l2−r2

⇒h2=52−3.762

⇒h2=10.8624

Height, 

h=3.29cm

Answer 2

Answer:

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