D. 129pi cm^squared
this is the answer that was cut off

 OPTION C

Step-by-step explanation:

The formula for calculate the surface area of a cone is shown below:

Where r is the radius, l is the slant height and SA is the surface area of the cone.

Substitute the values into the formula shown above. Therfore, the surface area of the cone is:

 cm²

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

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!