first and correct answer will be the brainliest
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HEMISPHERE
Radius =21 cm.
Surface Area = 3πr²
= 3×22/7×21×21
=4158sq.cm.
A.T.Q
CONE
Radius =21cm.
Volume of cone =1/3 of Volume of hemisphere
1/3 ×π×r×r×h= 1/3×4/3 ×π×r×r×r
h= 4/3×r
h=4/3×21
h=28cm.
Radius =21 cm.
Surface Area = 3πr²
= 3×22/7×21×21
=4158sq.cm.
A.T.Q
CONE
Radius =21cm.
Volume of cone =1/3 of Volume of hemisphere
1/3 ×π×r×r×h= 1/3×4/3 ×π×r×r×r
h= 4/3×r
h=4/3×21
h=28cm.
MunuThapa:
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