Question

What is the length of AC?

A. 128
B. 136
C. 108
D. 144

Answer 1

144

Explanation:

apex

Answer 2

d. 144

Explanation:

Triangle ABC and DCE are similar, that is, SSA

Therefore;

AB corresponds to DE, and AC corresponds to CE

Thus;

AB/DE = AC/CE

84/7 = (156-x) /x

cross multiplication;

84 x = 7(156-x)

84 x = 1092 -7x

91 x = 1092

x = 12

Therefore AC = 156 -12

= 144