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Mathematics 9 Online
OpenStudy (anonymous):

plz help just answer plz

OpenStudy (anonymous):

What is the approximate surface area of the cone shown here? cone with a slant height measuring fourteen millimeters and a base with a radius measuring 5 millimeters. one hundred sixty-five point zero square millimeters two hundred fifty-one point two square millimeters two hundred ninety-eight point three square millimeters five hundred thirty-three point three square millimeters

OpenStudy (anonymous):

@KlOwNlOvE

OpenStudy (anonymous):

SA = πr2 + πrl this is the formula for surface area 3.14(5)^2+3.14(5)(14)

OpenStudy (anonymous):

5^2=25 multiply that by 3.14=78.5

OpenStudy (anonymous):

5×14=70×3.13=219.8 whats 78.5+219.8?

OpenStudy (anonymous):

298.3

OpenStudy (anonymous):

yes the surface area would be 298.3 square millimeters

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