Question 1183412
Length of arc = {{{ ((theta)/360)* (pi)*d)}}}
length of arc p = 110/360 (2*pi*70)

p= 1540/36 * pi

area of major arc = (140 *pi -(1540/36)*(pi))

= 97.2 *pi

The area of major arc is the circumference of the base of cone

97.2*pi = d *pi
d= 97.2
r = 48.6

Now the radius of the circle becomes the slant height of the cone

height of cone {{{h= sqrt(l^2-r^2)}}}

height of cone = {{{sqrt(70^2-48.6^2)}}}

height of cone = 50.37

we know radius and height angle of cone can be calculated