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
6 and 1/3 or 19/3 or if you need the decimal 6.3 repeating
Answer:
4/10
Step-by-step explanation:
another way to say 0.4 is 4 tenths
4 tenths in fraction form is 4 over 10
so, 0.4 = 4/10
hope this helps :)
please crown me brainliest!!!
