Question

whats the surface area of a cone with a slant height of 13 and a radius of 13
a.1061.3
b.1075.4
c.1062.9
d.1060.0

Answer 1

SA = (pi)rs + (pi)^2

1281.8

Answer 2

nope. these are the options to my question..
1061.3
1075.4
1062.9
1060.0

Answer 3

r = 13 m
h = 0 m
s = 13 m
V = 0 m3
L = 530.929 m2
B = 530.929 m2
A = 1061.86 m2

Answer 4

\(13^2\pi+13^2\pi=338\pi\)

Answer 5

Of your answers, the one they're likely looking for is 1061.3, which is obtained if you use 3.14 for pi.

Answer 6

thank you nbouscal & compassionate (: