The answer is 0.6616
Hope it helped :)
Answer:
0.25
Step-by-step explanation:
This is the question on conditional probability
Let A - the quadrilateral has four right angles
B - the quadrilateral has four equal side lengths
Required probability = P(B/A)
By definition of continuous probability


P(A) = 
Hence given probability = 
X + 19 + 7x + 9 = 180
8x + 28 = 180
8x = 180 - 28
8x = 152
X = 152 : 8
X = 19
-9 is a rattional number because it is an integer and it can be squared.
1 gal = 3.8 liters....so 65 gallons = 65 * 3.8 = 247 liters