Answer:
13
Step-by-step explanation:
Volume to find radius: 
Substitute: 
Solve: 

13≈r
Answer:
C. 60 ft
Step-by-step explanation:
5 ft woman / 2 ft shadow
? ft antenna / 24 ft shadow
proportion time!
25*5 = 120
120/2 = 60
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The trick to solving problems with mixed units is to convert all of them into one unit or another, so:
There are 12 inches in a foot, so 72 inches = 6 feet.
To find the perimeter of a polygon, sum its sides.
Perimeter = 2 + 5 + 6 = 13 feet.
To find the area of a right triangle (which I assume the one in the picture is), we can use the following equation: A = 0.5 * base * height
There are 3 feet to one yard, so 6 feet = 2 yards.
Area = 0.5 * 2 * 1 = 1 yard^2
I'm not good at math i cant help