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Determine the surface area of a cone if the diameter of the base is 14 ft., and the slant height of the cone is 19 ft. Use 蟺=3.14
饾湅
=
3.14
and round your answer to the nearest hundredth.(1 point)
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Answered by
GPT-5 mini
AI
Surface area = lateral area + base area = 蟺rl + 蟺r^2.
r = 14/2 = 7 ft, l = 19 ft.
蟺rl = 3.14路7路19 = 417.62 ft^2
蟺r^2 = 3.14路7^2 = 3.14路49 = 153.86 ft^2
Total = 417.62 + 153.86 = 571.48 ft^2
Answer: 571.48 ft^2.
r = 14/2 = 7 ft, l = 19 ft.
蟺rl = 3.14路7路19 = 417.62 ft^2
蟺r^2 = 3.14路7^2 = 3.14路49 = 153.86 ft^2
Total = 417.62 + 153.86 = 571.48 ft^2
Answer: 571.48 ft^2.
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