Find the surface area and volume of cone. a = rs + r2 v = 1/3r2 h a cone's slant height (s) is 14 cm and its radius is 4.5 cm. surface area (to the nearest tenth) = cm2 volume (to the nearest tenth) = cm3

Surface area =

Volume =

Step-by-step explanation:

To find the surface area of our cone, we are using the formula for the surface area of a cone:

where

is the surface area

is the radius

is the height

Notice that the height, radius, and slant height make a right triangle, so to find the height, , we can use the Pythagorean theorem:

cm

We have all we need now to find the surface area of our cone:

Now, to find the volume of our cone, we are using the formula for the volume of a cone:

where

is the volume

is the radius

is the height

Replacing values

We can conclude that the surface area of our cone is 261.6 square centimeters and its volume is 281.2 cubic centimeters.

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4