Asked by Zainab

A sector with radius 9cm and subtend an angle 210°.find the a:find the base radius of the cone. B: height of the cone
Answered by mathhelper
Is your sector used to form a cone?
"find the a" .... What does that mean?

Fix your post so it makes sense.
Answered by oobleck
find the
a: base radius of the cone. r = 210/360 * 9
b: height of the cone. h^2 + r^2 = 9^2