geometry
posted by Anonymous .
Find the slant height of a cone with surface area of 178.6 in2 and a radius of the base of 4.9 in

a = pi r s
178.6 = 3.14 * 4.9 * s
s = 11.6
or, if you are including the base of the cone,
a = pi*r(r+s)
178.6 = 3.14 * 4.9 (4.9+s)
s = 6.71
Respond to this Question
Similar Questions

Geometry
Find the radius of a right cone with the slant height 21m and the surface area 168pi m^2 
Geometry
Find the lateral area and surface area for a right cone whose slant height forms a 45 degree angle with the base whose radius is 8 mm. 
geometry
1. What is the lateral surface area of a square pyramid with side length 11.2 cm and slant height 20 cm? 
geometry(surface area)
What is the lateral surface area of a cone with radius 19cm and slant height 11cm? 
Geometry
The surface area of a cone is 150ð in 2 . The radius of the base is 10 in. What is the slant height? 
mathssurface area
A solid is in the form of cone mounted on a hemisphere in such a way that the centre of the base of the cone just coincide with the centre of the base of the hemisphere. Slant height of the cone is L and radius of the base of the cone … 
geometry
A cone has a circular base, a perpendicular height equal to 21cm, and a semivertical angle of 30degrees. Calculate the slant height of the cone. Find the area of its base.(take pie to be 22/7) 
Geometry
Find the radius of a right cone with a slant height of 22 and surface area of 168pi 
Geometry
Find the radius of a right cone with slant height of 21 m and surface area of 232pi.. 
Maths
The ratio between the slant height and perpendicular height of a cone is 5:4.The radius of the base of the cone is 6cm.How to find slant height of cone?