(photo) i need !
what is the surface area of the right cone below?

The correct option is C.

Step-by-step explanation:

From the given figure it is clear that the radius of the cone is 3 units and slant height of the cone is 12 units.

The surface area of the right cone is

Where, r is radius, l is slant height.

Substitute r=3 and l=12 in the above formula.

The surface area of the given right cone is 45π units².

Therefore the correct option is C.

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

1. x> -5

2. x< 8

step-by-step explanation:

1. 2x> -10

divide by 2 from both sides of equation.

2x/2> -10/2

simplify, to find the answer.

-10/2=-5

x> -5 is the correct answer.

2. 3x< 24

divide by 3 from both sides of equation.

3x/3< 24/3

simplify, to find the answer.

24/3=8

x< 8 is the correct answer.

i hope this you, and have a wonderful day!