The volume of a right cone is 462m³ and its height is 9m. Then the lateral surface area is
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Answer:
1386 m
Step-by-step explanation:
radius of cone
462=1/3πr^2h
462=1/3×22/7×r^2×9
r^2=462×7/22×3
1078/22
49
r=7m
lateral surface area=πr√h^2+r^2
= 22/7×7√9×9×7×7
= 22√3969
=22×63
= 1386m
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