It's C because 1 and 5 are the same angles so they are parallel.
The answer you are looking for is 6.5.
To find this answer, you use the equation a² + b² = c², where c is the hypotenuse (the side with x in this case).
Next, fill in a and b with the two values given. Doing so will make the equation say 6² + 2.5² = c².
Now you solve for c.
6² = 36 and 2.5² = 6.25. (36 + 6.25 = c²)
36 + 6.25 = 42.25. (42.25 = c²)
√42.25 = 6.5. (6.5 = c)
Thus meaning 6.5 is the answer. I hope this helps!
There's one step to this problem. Division.
Whether it's a fraction or just plain division, on a calculator it'll still be division.
The Answer Is:
(Steps to Solve/Check)
Step 1. Divide the Numerator ( 
) by the Denominator ( 
)
6x10=60m^2
2x1.5=3m^2
Pi x 2^2=12.566m^2
60-3-12.566=44.433
44.433/10=4.43
So around 5 bags
5 x4x60=£23
