Question

Find the slant height of a cone with surface area 63.30 ft2 and diameter 6.2 ft.

Answer 1

do u know the formula for "total Surface Area of a Cone?"

Answer 2

@dopegyal_ ?

Answer 3

no):

Answer 4

ok, google "surface area of a cone" and get back to me with the formula, and we'll go through it together if u like?

Answer 5

SA= pi*r*s + pi*r^2 (:

Answer 6

yep
now if u think about a cone in terms of Area, it can be split into 2 parts:

Answer 7

so that's exactly how your equation works
SA = pi*r*s + pi*r^2
cone = sector area + circle area

Answer 8

now the question gave you the diameter of the circle, so how do you get the area of a circle if you only know the diameter
*remember A (circle) = pi x radius ^2

Answer 9

@dopegyal_ ?

Answer 10

30.1

Answer 11

cool, so u understand how to calculate that and the relationship between radius and diameter?

Answer 12

yes (: ty