haleydawkins05 haleydawkins05

26-05-2020
Mathematics

contestada

Determine the surface area of this
cone if the radius is 4 cm and the
height is 12 cm. Round your answer
to the nearest tenth.

Respuesta :

JadeMatilde JadeMatilde

26-05-2020

Answer:

209.22cm²

Step-by-step explanation:

A=πrl+πr2

l=r2+h2

Solving forA

A=πr(r+h2+r2)=π·4·(4+122+42)≈209.21889cm²

Answer Link

elmreyn elmreyn

26-05-2020

209.22 because A= pi *r * l + pi r^2

Answer Link

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