13) 5:4
14)12:54
15)10:1
16)3:5
17) 21:6
18)5:1
19)5:6
20)11:12
Since this is a right triangle, the sides are related by the Pythagorean theorem. a^2+b^2=c^2
Legs are a and b. Hypotenuse is c. Plugging in the values gives you:
9^2 + 12^2 = x^2
81 + 144 = x^2
X^2 = 225
Taking the square root of both sides gives you x=15
Answer:20 In
Step-by-step explanation:
Diameter=40 In
radius=diameter ➗ 2
radius=40 ➗ 2
radius=20 In