Find the surface area of a cone with a slant height of 12 and a radius of 14. Use 3.14 for pi. Round your answer to the nearest tenth. 1142 1143 1144 1145 please explain!

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asked Oct 5, 2018 129k views

2 votes

Find the surface area of a cone with a slant height of 12 and a radius of 14. Use 3.14 for pi. Round your answer to the nearest tenth.

1142

1143

1144

1145

please explain!

Mathematics
high-school

JEY asked

by JEY

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2 Answers

5 votes

S = πrl + π r²
r = 14
l = 12
S =1142,96≈1143

Orly answered Oct 7, 2018

by Orly

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5 votes

Surface area of cone = πr(l + r)
= 3.14×14(14+12)
= 3.14 × 14 × 26
= 1142.96
= 1143

Jitesh Mohite answered Oct 12, 2018

by Jitesh Mohite

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