Answer:
a=16
Step-by-step explanation:
16/4+2 = 6
Thus the answer is 16
Answer: -3/2
Step-by-step explanation:
2
3
4
−9
=
2
3
−4
9
=
−3
2
Ok so we know that the distance around the circle (or circumference) is equal to the diameter times pi.
This means that

d being the diameter,
This means that:

= 12.00028271
= 12 m
So the diameter of the circle is 12 metres.
Hope this helped