tolong di jawab tiga-tiganya ya

48.Keliling A
[tex] \frac{1}{2} \times \frac{22}{7} \times (7 + 7 + 7)[/tex]
=33 cm
[tex] \frac{1}{2 } \times \frac{22}{7} \times (7 + 7 )[/tex]
=22 cm
33+22+7=62
B. 62 cm