Item 1 Find the surface area of the cone. Round your answer to the nearest tenth.

The surface area is
30
m².

Step-by-step explanation:

r=4 m

slant height l=5 m

surface area=πr²+πrl=πr(r+l)=π×4(4+5)=36 π m²≈113.1 m²

understand that i don't know the answers

will someone answer his question

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!