Question 58 (General Aptitude)
A right-angled cone (with base radius 5 cm and height 12 cm) as shown in the figure below, is rolled on the ground keeping the point P fixed until the point Q (at the base of the cone, as shown) touches the ground again.
By what angle (in radius) about P does the cone travel ?
Answer / Solution
Given in the figure-
Inclined height(slant height,l)=
Here, As cone is rolling over circumference 360 deg.
Let the cone angle=