Question

MEDALS & FAN ANYBODY ?!!
Find the surface area of the cone in terms of pi.
A. 54pi cm^2
B. 99pi cm^2
C. 51 cm^2
D. 49.5 cm^5

Answer 1

Search the internet for the formula you need.
Then post it.

Answer 2

https://www.google.com/search?q=surface+area+of+cone&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a&channel=nts

Answer 3

πr(r+h2+r2)

Answer 4

This one is better:
https://www.google.com/search?q=surface+area+of+cone&client=firefox-a&rls=org.mozilla:en-US:official&channel=nts&tbm=isch&imgil=xXn3vLIaqWEovM%253A%253BsWqb092M3c8r-M%253Bhttp%25253A%25252F%25252Fwww.mathwarehouse.com%25252Fsolid-geometry%25252Fcone%25252Fsurface-area-of-a-cone-formula-examples.php&source=iu&pf=m&fir=xXn3vLIaqWEovM%253A%252CsWqb092M3c8r-M%252C_&usg=__JKDLYTwkghjcB1ANiBJbVP0PYQI%3D&biw=1680&bih=949&ved=0CEEQyjc&ei=mZI-VK2RNbSIsQSg0oK4CA#facrc=_&imgdii=_&imgrc=xXn3vLIaqWEovM%253A%3BsWqb092M3c8r-M%3Bhttp%253A%252F%252Fwww.mathwarehouse.com%252Fsolid-geometry%252Fcone%252Fimages%252Fsurface-area-of-cone%252Ftotal-surface-formula-cone.jpg%3Bhttp%253A%252F%252Fwww.mathwarehouse.com%252Fsolid-geometry%252Fcone%252Fsurface-area-of-a-cone-formula-examples.php%3B429%3B405

Answer 5

@heavenfun13 can you help ?

Answer 6

πr(r+h2+r2) is the formula

Answer 7

You have a 3-cm radius of the base, and a 15-cm slant height.

Answer 8

The total surface area is the lateral area plus the area of the base.

Answer 9

i know the formula... so would i multiply 3 & 15 ?

Answer 10

The area of the base is the area of a circle with radius 3 cm.

Answer 11

The lateral area is half the circumference of the base times the slant height.

Answer 12

\(Total~ Surface~ Area = \dfrac{1}{2} \times circumference \times slant~height + \pi r^2\)