The answers would be 11, if you plug it in it would be 5(11)-7=48
The formula of an area of a circle:

r - a radius
We have r = 14m. Substitute:

If you want an approximate area, you can accept 
Then:

Answer:
it would be C do to the fact that 0.5 x 8=4
It would take only one full bus to carry only girls.
Answer:
1m
The greatest common factor is one. They also have an ‘m’ in common
Hope this helps