Respuesta :

lastbenchstudent

surface area of cone =

[tex]\pi \: r(l + r)[/tex]

where r is radius and l is slant height

r = 3 yd

l = 10 yd

Surface area =

[tex]\pi \times 3 \: (10 + 3) \\ = 3.14 \times 3 \times 13 \\ = 122.46 \: {yd}^{2} [/tex]

vzhang607

Answer:

122.46

Step-by-step explanation:

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