Answer:
1176.679ft²
Step-by-step explanation:
<u>The question is on surface area of a cylindrical fuel tank</u>
Equation for surface area of a cylinder
S.A = 2rh +2
r²
where r is the radius of cylinder and h is height of cylinder
Diameter=7'⇒r=3.5' and h=50'
Surface Area= 2×3.142×3.5×50 + 2×3.142×3.5×3.5
S.A=1099.7+76.979=1176.679ft²
Answer:
1.637 x 10¹⁴ different playlists
Step-by-step explanation:
Since DJ Ali needs to choose 9 songs and wishes that the number of blues, country and jazz songs are the same, she needs to pick 3 songs of each type. The total number of ways she can choose the songs, without considering their order is:
The number of possible ways of ordering those nine song is:
There are 1.637 x 10¹⁴ different possible playlist.