curved surface area of combined solid (cylinder and hemisphere) is 19404 cm2 and its height is 126 cm calculate the area of base of solid.
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Answer:
4158 cm2
Step-by-step explanation:
Volume of hemisphere is given as 32πr3=19404c.c.
⇒r=21 cm
Surface area of hemisphere =3πr2=3×π×212
=3×441×3.14
=4158 cm2
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