Instructions: Find the area H
15.2 km
15.2 km
$12.3 km
F.
E
D
5.2 km
14.1 km
20.2 km
С
B

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0