tolong jawabanya please

luas lingkaran =
[tex] \frac{1}{4} \pi \: d[/tex]
A. diameter= 50m
¼. 3,14. 50 = 39,25
B. diameter=1,4m
¼.3,14.1,4= 1,099m
C. diameter= 35m
¼.3.14.35=27,475
D. diameter= 25m
¼.3,14.25= 19,625
e. ga keliatan angka ny