+1982 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
+37146 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
