Answer:

Step-by-step explanation:
The formula of a lateral area of a cone:

r - radius
l - slant height
The formula of a surface area of a cone:

We have r= 8in and l = 21in. Substitute:


Answer:
m<6=77°
Step-by-step explanation:
Because the angles marked 3x+5 and 4x+7 are same side exterior angles, they are supplementary, meaning that
3x+5°+4x+7°=180°
7x+12°=180°
7x=168°
x=24°
Because the angles marked 6 and 3x+5 are corresponding angles, they are congruent, so:
<6=24*3+5
<6=77°
Answer:
IK
Step-by-step explanation:
If you draw out the triangles it is easier to see
6 x minus 4 and start fraction 9 over 10
Answer:
i believe u add all of them up
Step-by-step explanation: