SOLUTION: a cone is made from a sector of a circle of radius 20cm and sectional angle of 120degrees. find the radius of the base of the cone
Algebra.Com
Question 882902: a cone is made from a sector of a circle of radius 20cm and sectional angle of 120degrees. find the radius of the base of the cone
Answer by alicealc(293) (Show Source): You can put this solution on YOUR website!
base circumference of the cone = arc length of the sector
Let:
r = radius of the base of the cone
d = diameter of the circle = 2*20 = 40 cm
r = 20/3 cm = 6.67 cm
so, the radius of the base of the cone is 6.67 cm.
RELATED QUESTIONS
A cone of base radius 7cm was made from a sector of a circle which subtends an angle of... (answered by mananth)
a) The area of a sector of a circle with diameter 12cm is 6.6cm², if the sector is... (answered by mananth)
A cone whose base diameter and vertical height are 24cm and 5cm respectively is unfolded... (answered by josgarithmetic)
please help me solve this quest
ion ((( a cone whose base diameter and vertical height... (answered by Theo)
A sector of a circle of radius 8cm subtends an angle 90 degrees at the centre of the... (answered by stanbon)
A sector of circle has a radius 4cm. It is folded over to form a circular cone. Find the... (answered by ankor@dixie-net.com)
A sector of a circle 7cm subtending an angle 210 at the centre of the circle, is used to... (answered by josgarithmetic,KMST)
Please help me solve this question:A cone with the sector angle of 45 degree is cut out... (answered by Theo)
Calculate the area of a sector of a circle of radius 6cm given that its arc substends... (answered by ikleyn)