Use a net to find the surface area of the cone to the nearest square centimeter. Use 3.14 for .
23 cm
0-9 cm
The surface area of the cone is about cm2.
(Round to the nearest whole number as needed.)

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

for future students the answer is b

hope i

-lavira: )

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

answer: the answer is   graph (a)