Question

Find the surface area of a cone with radius 30 in and slant height 50 in. Use 3.14 for pi.
A. 7536 in2
B. 2400 in2
C. 504.14 in2
D. 2800 in2

Answer 1

formula for a cone: https://www.google.ca/?gws_rd=ssl#q=surface+are+of+a+cone

Answer 2

idk how but i got 2826

Answer 3

Use the pythgoran theorm to find the h,
\[h= \sqrt{(slant height)^{2} - (r)^{2}}\]

Answer 4

i got 40

Answer 5

then use the formula that is on the link or just enter the values.

Answer 6

do not subsitute 50 as h, h here is 40 because 50 is the slant height

Answer 7

i got 7539.82

Answer 8

if you use 3.14 as pi, you will get 7536

Answer 9

did you get it?

Answer 10

mhm

Answer 11

any doubts?

Answer 12

no

Answer 13

no I do not have any doubts