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OpenStudy (anonymous):
Medal and fan if you help me! Find the surface area of the cone. Use 3.14 for pi
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OpenStudy (anonymous):
OpenStudy (anonymous):
first, what is the formula for the surface area of a cone?
OpenStudy (anonymous):
pr2 + prs?
OpenStudy (anonymous):
correct from the given picture you can identify the radius and its 4 right? so you have your r in the formula next is s, s is the slant height which is 7 in the picture substitute those values: surface area=pir^2+pirs SA=pi(4)^2+pi(4)(7) SA=44pi in^2
OpenStudy (anonymous):
forgot use 3.14 as pi sorry SA=3.14(4)^2+3.14(4)(7) SA=138.16 in^2
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OpenStudy (anonymous):
Thank you!
OpenStudy (anonymous):
The answer is 151
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