19 find the perimeter of the figure.
4.5 cm
a 12.15 cm
b 13.3 cm 2.7 cm
c 15.3 cm
d 18.0 cm
3.4 cm
2.7 cm

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio