Answer:
200π
Step-by-step explanation:
Surface area of a cone = πr(r+l)
r is the radius
l is the slant height
Volume of the cone = 1/3πr²h
320π = 1/3πr²h
320 = 1/3r²(15)
320 = 5r²
r² = 320/5
r² = 64
r = 8
l² = 15² + 8²
l² = 225 + 64
l² = 289
l = 17
Get the surface area;
S = πr(r+l)
S = π8(8+17)
S = π*8*25
S = 200π
Hence the surface area of the cone is 200π
To change 3 1/4 to an improper fraction, we must transfer the mixed number, which contains a fraction (1/4) and whole number (3), to just a fraction.
To do this, we must transfer 3 to a fraction with the denominator being 4
We can do 3 x 4 to find the number on top.
3 x 4 = 12
To check to make sure we did it right, we can do 12 / 4 which = 3 (√ check!)
Then we add 1/4 to 12/4 to get B. 13/4
320/80 = 4
plus 33 for free equals 37 total chairs.
cc=37
Answer:
8.97
Step-by-step explanation:
3.45(2.6) = $8.97
Hope this helps you! :)
