A circlar sheet of radius 36 cm is divided into two sector central angle of one sector is 120 the sector are rolled-up into cone .
(1) what is slant height of the cones?
(2) what is the ratio of the central angles of the sector ?
(3) find the radius of each cone
(4) what is the ratio of their radii?
Please answer the question with steps
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Answered by
0
Answer:
The radius of the circular sheet 36cm
a. Slant height of the cone =36cm
b.Radius of the cone r=
1
r
=
36
x
(formula) centre angel (x) =360/4=90
o
i.e.,
36
r
=
360
90
r=
360
36×90
=9cm
Hence,the radius of the cone =9cm
c.Curved surface are (CSA)=πrl
π×9×36=324πcm
2
324×3.14=1017.36cm
2
Answered by
0
Answer:
The sum of two number is 420.
if one number is 120 what is the other number
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