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avatar+1685 

Suppose a gas tank is in the shape of a cylinder. The tank is 20 feet long and 8 feet in diameter. Find the amount of metal used to construct the tank.  (Hint: use 3.14 for π .)


A. 1570.4 ft2


B. 384.5 ft2


C. 1028 ft2


D. 602.9 ft2

 

 

 

 

Find the measure of angle A in the triangle below.

 


 

A. 100 degrees


B. 52 degrees


C. 28 degrees


D. 14 degrees

 Mar 4, 2020
 #1
avatar+22043 
+1

Tank ends      pi r ^2   =    pi (4)^2      this is ONE end....remember, there are TWO

 

tank sides       pi d  h    = pi  ( 8)  (20)       add this to the two ends......

 

 

 

 

 

 

angles of triangles total 180o

 

2x         +        4x-4        + 100      = 180        solve for 'x'    then the angles are  x       2x       and    4x-4  

 Mar 4, 2020
 #2
avatar+1685 
0

1. D. 602.9 ft2

 

2. 28 degrees

macabresubwoofer  Mar 4, 2020
edited by macabresubwoofer  Mar 4, 2020

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